Karel Krejčí
Karel Krejčí Detailed Stats
Career StatsOverall Record
- Total Matches
- 49
- Matches Played
- 19
- Wins
- 12
- Draws
- 18
- Losses
Recent Form
DLLWLWLLLW
Goal Distribution
- 61
- Scored
- 58
- Conceded
- 3
- GA
OPPMinFOR
0%
0-15
2%
0%
16-30
2%
3%
31-45
0%
0%
46-60
0%
3%
61-75
0%
3%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Goals Total
- 28.57%
- Failed to Score
- 34.69%
- Clean Sheets
UnderLineOver
8%
0.5
92%
31%
1.5
69%
57%
2.5
43%
78%
3.5
22%
90%
4.5
10%
94%
5.5
6%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Scored
- 14
- Failed to Score
- 28.57%
- %
UnderLineOver
29%
0.5
71%
65%
1.5
35%
94%
2.5
6%
96%
3.5
4%
96%
4.5
4%
96%
5.5
4%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Conceded
- 17
- Clean Sheets
- 34.69%
- %
UnderLineOver
35%
0.5
65%
61%
1.5
39%
90%
2.5
10%
98%
3.5
2%
98%
4.5
2%
100%
5.5
0%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Red Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Yellow Cards
- 1
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
100%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
| Details | For | Against | ||
|---|---|---|---|---|
| Stat | Total | Avg | Avg | Total |
| AttemptsDribbles | 37 | 12.33 | 17 | 51 |
| PastDribbles | 29 | 9.67 | 3.67 | 11 |
| SuccessDribbles | 11 | 3.67 | 9.67 | 29 |
| TotalDuels | 351 | 117 | 117 | 351 |
| WonDuels | 167 | 55.67 | 61.33 | 184 |
| CommittedFouls | 46 | 15.33 | 15 | 45 |
| DrawnFouls | 45 | 15 | 15 | 45 |
| SavesGoals | 9 | 3 | 2 | 6 |
| Offsides | 6 | 2 | 3.33 | 10 |
| KeyPasses | 23 | 7.67 | 10 | 30 |
| TotalPasses | 1143 | 381 | 420.33 | 1261 |
| CommitedPenalty | 0 | 0 | 0 | 0 |
| MissedPenalty | 0 | 0 | 0 | 0 |
| SavedPenalty | 0 | 0 | 0 | 0 |
| ScoredPenalty | 0 | 0 | 0 | 0 |
| WonPenalty | 0 | 0 | 0 | 0 |
| OnShots | 6 | 2 | 4.33 | 13 |
| TotalShots | 15 | 5 | 9.67 | 29 |
| BlocksTackles | 2 | 0.67 | 3.33 | 10 |
| InterceptionsTackles | 18 | 6 | 9.33 | 28 |
| TotalTackles | 53 | 17.67 | 14 | 42 |
Opponent Analysis Detailed Stats
Detailed performance breakdown against specific opponent formations.
Overall Record
- Total Matches
- 42
- Matches Played
- 19
- Wins
- 9
- Draws
- 14
- Losses
Recent Form
DLLWLWLLWD
Goal Distribution
- 57
- Scored
- 47
- Conceded
- 10
- GA
OPPMinFOR
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Goals Total
- 23.81%
- Failed to Score
- 38.1%
- Clean Sheets
UnderLineOver
7%
0.5
93%
33%
1.5
67%
52%
2.5
48%
76%
3.5
24%
90%
4.5
10%
93%
5.5
7%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Scored
- 10
- Failed to Score
- 23.81%
- %
UnderLineOver
24%
0.5
76%
62%
1.5
38%
93%
2.5
7%
95%
3.5
5%
95%
4.5
5%
95%
5.5
5%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Conceded
- 16
- Clean Sheets
- 38.1%
- %
UnderLineOver
38%
0.5
62%
64%
1.5
36%
90%
2.5
10%
98%
3.5
2%
98%
4.5
2%
100%
5.5
0%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Red Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Yellow Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
| Details | For | Against | ||
|---|---|---|---|---|
| Stat | Total | Avg | Avg | Total |
| AttemptsDribbles | 0 | 0 | 0 | 0 |
| PastDribbles | 0 | 0 | 0 | 0 |
| SuccessDribbles | 0 | 0 | 0 | 0 |
| TotalDuels | 0 | 0 | 0 | 0 |
| WonDuels | 0 | 0 | 0 | 0 |
| CommittedFouls | 0 | 0 | 0 | 0 |
| DrawnFouls | 0 | 0 | 0 | 0 |
| SavesGoals | 0 | 0 | 0 | 0 |
| Offsides | 0 | 0 | 0 | 0 |
| KeyPasses | 0 | 0 | 0 | 0 |
| TotalPasses | 0 | 0 | 0 | 0 |
| CommitedPenalty | 0 | 0 | 0 | 0 |
| MissedPenalty | 0 | 0 | 0 | 0 |
| SavedPenalty | 0 | 0 | 0 | 0 |
| ScoredPenalty | 0 | 0 | 0 | 0 |
| WonPenalty | 0 | 0 | 0 | 0 |
| OnShots | 0 | 0 | 0 | 0 |
| TotalShots | 0 | 0 | 0 | 0 |
| BlocksTackles | 0 | 0 | 0 | 0 |
| InterceptionsTackles | 0 | 0 | 0 | 0 |
| TotalTackles | 0 | 0 | 0 | 0 |
Overall Record
- Total Matches
- 24
- Matches Played
- 9
- Wins
- 8
- Draws
- 7
- Losses
Recent Form
DLLLWDWWWD
Goal Distribution
- 27
- Scored
- 22
- Conceded
- 5
- GA
OPPMinFOR
0%
0-15
0%
0%
16-30
0%
5%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Goals Total
- 33.33%
- Failed to Score
- 41.67%
- Clean Sheets
UnderLineOver
13%
0.5
88%
42%
1.5
58%
67%
2.5
33%
83%
3.5
17%
96%
4.5
4%
96%
5.5
4%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Scored
- 8
- Failed to Score
- 33.33%
- %
UnderLineOver
33%
0.5
67%
71%
1.5
29%
96%
2.5
4%
96%
3.5
4%
96%
4.5
4%
96%
5.5
4%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Conceded
- 10
- Clean Sheets
- 41.67%
- %
UnderLineOver
42%
0.5
58%
75%
1.5
25%
92%
2.5
8%
100%
3.5
0%
100%
4.5
0%
100%
5.5
0%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Red Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Yellow Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
| Details | For | Against | ||
|---|---|---|---|---|
| Stat | Total | Avg | Avg | Total |
| AttemptsDribbles | 9 | 9 | 19 | 19 |
| PastDribbles | 9 | 9 | 6 | 6 |
| SuccessDribbles | 6 | 6 | 9 | 9 |
| TotalDuels | 108 | 108 | 108 | 108 |
| WonDuels | 53 | 53 | 55 | 55 |
| CommittedFouls | 14 | 14 | 18 | 18 |
| DrawnFouls | 18 | 18 | 14 | 14 |
| SavesGoals | 4 | 4 | 3 | 3 |
| Offsides | 4 | 4 | 4 | 4 |
| KeyPasses | 7 | 7 | 13 | 13 |
| TotalPasses | 324 | 324 | 418 | 418 |
| CommitedPenalty | 0 | 0 | 0 | 0 |
| MissedPenalty | 0 | 0 | 0 | 0 |
| SavedPenalty | 0 | 0 | 0 | 0 |
| ScoredPenalty | 0 | 0 | 0 | 0 |
| WonPenalty | 0 | 0 | 0 | 0 |
| OnShots | 3 | 3 | 5 | 5 |
| TotalShots | 5 | 5 | 14 | 14 |
| BlocksTackles | 2 | 2 | 0 | 0 |
| InterceptionsTackles | 5 | 5 | 13 | 13 |
| TotalTackles | 15 | 15 | 8 | 8 |
Opponent Analysis Detailed Stats
Detailed performance breakdown against specific opponent formations.
Overall Record
- Total Matches
- 22
- Matches Played
- 9
- Wins
- 7
- Draws
- 6
- Losses
Recent Form
DLLLWDWWWD
Goal Distribution
- 26
- Scored
- 19
- Conceded
- 7
- GA
OPPMinFOR
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Goals Total
- 31.82%
- Failed to Score
- 45.45%
- Clean Sheets
UnderLineOver
14%
0.5
86%
45%
1.5
55%
64%
2.5
36%
82%
3.5
18%
95%
4.5
5%
95%
5.5
5%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Scored
- 7
- Failed to Score
- 31.82%
- %
UnderLineOver
32%
0.5
68%
68%
1.5
32%
95%
2.5
5%
95%
3.5
5%
95%
4.5
5%
95%
5.5
5%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Conceded
- 10
- Clean Sheets
- 45.45%
- %
UnderLineOver
45%
0.5
55%
77%
1.5
23%
91%
2.5
9%
100%
3.5
0%
100%
4.5
0%
100%
5.5
0%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Red Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Yellow Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
| Details | For | Against | ||
|---|---|---|---|---|
| Stat | Total | Avg | Avg | Total |
| AttemptsDribbles | 0 | 0 | 0 | 0 |
| PastDribbles | 0 | 0 | 0 | 0 |
| SuccessDribbles | 0 | 0 | 0 | 0 |
| TotalDuels | 0 | 0 | 0 | 0 |
| WonDuels | 0 | 0 | 0 | 0 |
| CommittedFouls | 0 | 0 | 0 | 0 |
| DrawnFouls | 0 | 0 | 0 | 0 |
| SavesGoals | 0 | 0 | 0 | 0 |
| Offsides | 0 | 0 | 0 | 0 |
| KeyPasses | 0 | 0 | 0 | 0 |
| TotalPasses | 0 | 0 | 0 | 0 |
| CommitedPenalty | 0 | 0 | 0 | 0 |
| MissedPenalty | 0 | 0 | 0 | 0 |
| SavedPenalty | 0 | 0 | 0 | 0 |
| ScoredPenalty | 0 | 0 | 0 | 0 |
| WonPenalty | 0 | 0 | 0 | 0 |
| OnShots | 0 | 0 | 0 | 0 |
| TotalShots | 0 | 0 | 0 | 0 |
| BlocksTackles | 0 | 0 | 0 | 0 |
| InterceptionsTackles | 0 | 0 | 0 | 0 |
| TotalTackles | 0 | 0 | 0 | 0 |
Overall Record
- Total Matches
- 25
- Matches Played
- 10
- Wins
- 4
- Draws
- 11
- Losses
Recent Form
LWWLLLWWLL
Goal Distribution
- 34
- Scored
- 36
- Conceded
- -2
- GA
OPPMinFOR
0%
0-15
3%
0%
16-30
3%
3%
31-45
0%
0%
46-60
0%
6%
61-75
0%
6%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Goals Total
- 24%
- Failed to Score
- 28%
- Clean Sheets
UnderLineOver
4%
0.5
96%
20%
1.5
80%
48%
2.5
52%
72%
3.5
28%
84%
4.5
16%
92%
5.5
8%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Scored
- 6
- Failed to Score
- 24%
- %
UnderLineOver
24%
0.5
76%
60%
1.5
40%
92%
2.5
8%
96%
3.5
4%
96%
4.5
4%
96%
5.5
4%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Conceded
- 7
- Clean Sheets
- 28%
- %
UnderLineOver
28%
0.5
72%
48%
1.5
52%
88%
2.5
12%
96%
3.5
4%
96%
4.5
4%
100%
5.5
0%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Red Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Yellow Cards
- 1
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
100%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
| Details | For | Against | ||
|---|---|---|---|---|
| Stat | Total | Avg | Avg | Total |
| AttemptsDribbles | 28 | 14 | 16 | 32 |
| PastDribbles | 20 | 10 | 2.5 | 5 |
| SuccessDribbles | 5 | 2.5 | 10 | 20 |
| TotalDuels | 243 | 121.5 | 121.5 | 243 |
| WonDuels | 114 | 57 | 64.5 | 129 |
| CommittedFouls | 32 | 16 | 13.5 | 27 |
| DrawnFouls | 27 | 13.5 | 15.5 | 31 |
| SavesGoals | 5 | 2.5 | 1.5 | 3 |
| Offsides | 2 | 1 | 3 | 6 |
| KeyPasses | 16 | 8 | 8.5 | 17 |
| TotalPasses | 819 | 409.5 | 421.5 | 843 |
| CommitedPenalty | 0 | 0 | 0 | 0 |
| MissedPenalty | 0 | 0 | 0 | 0 |
| SavedPenalty | 0 | 0 | 0 | 0 |
| ScoredPenalty | 0 | 0 | 0 | 0 |
| WonPenalty | 0 | 0 | 0 | 0 |
| OnShots | 3 | 1.5 | 4 | 8 |
| TotalShots | 10 | 5 | 7.5 | 15 |
| BlocksTackles | 0 | 0 | 5 | 10 |
| InterceptionsTackles | 13 | 6.5 | 7.5 | 15 |
| TotalTackles | 38 | 19 | 17 | 34 |
Opponent Analysis Detailed Stats
Detailed performance breakdown against specific opponent formations.
Overall Record
- Total Matches
- 20
- Matches Played
- 10
- Wins
- 2
- Draws
- 8
- Losses
Recent Form
LWWLLWWLLL
Goal Distribution
- 31
- Scored
- 28
- Conceded
- 3
- GA
OPPMinFOR
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Goals Total
- 15%
- Failed to Score
- 30%
- Clean Sheets
UnderLineOver
0%
0.5
100%
20%
1.5
80%
40%
2.5
60%
70%
3.5
30%
85%
4.5
15%
90%
5.5
10%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Scored
- 3
- Failed to Score
- 15%
- %
UnderLineOver
15%
0.5
85%
55%
1.5
45%
90%
2.5
10%
95%
3.5
5%
95%
4.5
5%
95%
5.5
5%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Goals Conceded
- 6
- Clean Sheets
- 30%
- %
UnderLineOver
30%
0.5
70%
50%
1.5
50%
90%
2.5
10%
95%
3.5
5%
95%
4.5
5%
100%
5.5
0%
100%
6.5
0%
100%
7.5
0%
100%
8.5
0%
Red Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
Yellow Cards
- 0
- For
- 0
- Opp
ForMinOpp
0%
0-15
0%
0%
16-30
0%
0%
31-45
0%
0%
46-60
0%
0%
61-75
0%
0%
76-90
0%
0%
91-105
0%
0%
106-120
0%
0%
120+
0%
| Details | For | Against | ||
|---|---|---|---|---|
| Stat | Total | Avg | Avg | Total |
| AttemptsDribbles | 0 | 0 | 0 | 0 |
| PastDribbles | 0 | 0 | 0 | 0 |
| SuccessDribbles | 0 | 0 | 0 | 0 |
| TotalDuels | 0 | 0 | 0 | 0 |
| WonDuels | 0 | 0 | 0 | 0 |
| CommittedFouls | 0 | 0 | 0 | 0 |
| DrawnFouls | 0 | 0 | 0 | 0 |
| SavesGoals | 0 | 0 | 0 | 0 |
| Offsides | 0 | 0 | 0 | 0 |
| KeyPasses | 0 | 0 | 0 | 0 |
| TotalPasses | 0 | 0 | 0 | 0 |
| CommitedPenalty | 0 | 0 | 0 | 0 |
| MissedPenalty | 0 | 0 | 0 | 0 |
| SavedPenalty | 0 | 0 | 0 | 0 |
| ScoredPenalty | 0 | 0 | 0 | 0 |
| WonPenalty | 0 | 0 | 0 | 0 |
| OnShots | 0 | 0 | 0 | 0 |
| TotalShots | 0 | 0 | 0 | 0 |
| BlocksTackles | 0 | 0 | 0 | 0 |
| InterceptionsTackles | 0 | 0 | 0 | 0 |
| TotalTackles | 0 | 0 | 0 | 0 |
| Details | Ranking | Matches | Goals | Form | ||
|---|---|---|---|---|---|---|
| Rank | Pts | M | W/D/L | GD(S/A) | Form | |
| Příbram2023 FNL | 13 | 37 | 30 | 11/4/15 | -11(32/43) | WLDLL |
| Příbram2022 FNL | 3 | 51 | 30 | 14/9/7 | 16(48/32) | DWWWD |
| Details | M | Home W% | Away W% | Total W% |
|---|---|---|---|---|
| 2024Friendlies Clubs | 1 | 0.0 | 0.0 | 0.0 |
| 2023FNL | 23 | 58.33 | 36.36 | 47.83 |
| 2023Friendlies Clubs | 2 | 0.0 | 0.0 | 0.0 |
| 2021UEFA U21 Championship | 3 | 0.0 | 0.0 | 0.0 |
- HPříbram1 - 1FNLATáborsko
- HSparta Praha II5 - 1FNLAPříbram
- HPříbram0 - 1FNLASigma Olomouc II
- HDukla Praha1 - 2FNLAPříbram
- HPříbram0 - 1FNLAVlašim
- HHanácká0 - 2FNLAPříbram
- HPříbram0 - 1FNLAArtis
- HOpava1 - 0FNLAPříbram
- HTáborsko3 - 2Friendlies ClubsAPříbram
- HPříbram1 - 0FNLAViktoria Žižkov
- HPříbram2 - 2FNLAVarnsdorf
- HVysočina Jihlava2 - 1FNLAPříbram
- HPříbram1 - 0FNLAProstějov
- HZbrojovka Brno0 - 1FNLAPříbram
- HPříbram2 - 1FNLAChrudim
- HTáborsko0 - 1FNLAPříbram
- HPříbram2 - 1FNLASparta Praha II
- HSigma Olomouc II2 - 1FNLAPříbram
- HPříbram0 - 0FNLADukla Praha
- HVlašim3 - 1FNLAPříbram
- HPříbram1 - 3FNLAHanácká
- HArtis2 - 0FNLAPříbram
- HPříbram1 - 0FNLAOpava
- HViktoria Žižkov2 - 3FNLAPříbram
- HVyškov2 - 1FNLAPříbram
- HPříbram2 - 2Friendlies ClubsADukla Praha
- HSlovan Liberec2 - 0Friendlies ClubsAPříbram
- HPardubice0 - 0Czech LigaAPříbram
- HPříbram0 - 2Czech LigaAPardubice
- HTáborsko2 - 2FNLAPříbram
- HPříbram1 - 0FNLASparta Praha II
- HVysočina Jihlava1 - 2FNLAPříbram
- HPříbram2 - 0FNLAOpava
- HVyškov2 - 2FNLAPříbram
- HPříbram1 - 2FNLASlavia Praha II
- HPříbram0 - 3FNLAVlašim
- HSpain U212 - 0UEFA U21 ChampionshipACzech Republic U21
- HSlovenia U211 - 1UEFA U21 ChampionshipACzech Republic U21
- HCzech Republic U211 - 1UEFA U21 ChampionshipAItaly U21
- HGreece U210 - 2UEFA U21 ChampionshipACzech Republic U21
- HLithuania U210 - 1UEFA U21 ChampionshipACzech Republic U21
- HScotland U212 - 0UEFA U21 ChampionshipACzech Republic U21
- HCzech Republic U210 - 0UEFA U21 ChampionshipACroatia U21
- HSan Marino U210 - 6UEFA U21 ChampionshipACzech Republic U21
- HCroatia U211 - 2UEFA U21 ChampionshipACzech Republic U21
- HCzech Republic U216 - 0UEFA U21 ChampionshipASan Marino U21
- HCzech Republic U210 - 0UEFA U21 ChampionshipAScotland U21
- HCzech Republic U211 - 1UEFA U21 ChampionshipAGreece U21
- HCzech Republic U212 - 0UEFA U21 ChampionshipALithuania U21