Defensive back, Iowa, 2018–21
Jack Koerner
- Number
- No. 28
- Height
- 6′0″
- Weight
- 204 lb
- Class (2021)
- Senior
- Hometown
- Des Moines, IA
Jack Koerner played defensive back at Iowa (2018–21).
Career highs
13tackles, career hightwice; last at Purdue, 2020Honors
Defense
Season lines from CollegeFootballData, regular season and bowls. A dash: the source has no number for that season (often an FCS season), and career totals count only the numbers on file.
On the roster
As each season’s roster listed the player (CollegeFootballData). Classes before the latest listing are counted back from it; “Yr 1” is the year on file where that count can’t place a season he played (a redshirt, transfer or 2020 year); height and weight as last listed.
Game by game
2021 Iowa 13 games, 88 tackles, 2 INT
| Date | Opponent | Result | Tkl | Solo | TFL | Sacks | Int | PD |
|---|---|---|---|---|---|---|---|---|
| Sep 4 | vs. Indiana | W 34–6 | 5 | 3 | 0 | 0 | 0 | 2 |
| Sep 11 | at Iowa State | W 27–17 | 5 | 5 | 0 | 0 | 0 | 0 |
| Sep 18 | vs. Kent State | W 30–7 | 7 | 5 | 1 | 0 | 0 | 0 |
| Sep 25 | vs. Colorado State | W 24–14 | 6 | 6 | 0 | 0 | 0 | 0 |
| Oct 1 | at Maryland | W 51–14 | 2 | 2 | 0 | 0 | 1 | 0 |
| Oct 9 | vs. Penn State | W 23–20 | 7 | 4 | 0 | 0 | 1 | 0 |
| Oct 16 | vs. Purdue | L 7–24 | 9 | 5 | 2 | 0 | 0 | 0 |
| Oct 30 | at Wisconsin | L 7–27 | 11 | 9 | 0 | 0 | 0 | 0 |
| Nov 6 | at Northwestern | W 17–12 | 8 | 8 | 0 | 0 | 0 | 0 |
| Nov 13 | vs. Minnesota | W 27–22 | 8 | 3 | 0 | 0 | 0 | 0 |
| Nov 26 | at Nebraska | W 28–21 | 7 | 6 | 0 | 0 | 0 | 0 |
| Dec 4 | vs. Michigan | L 3–42 | 8 | 5 | 0 | 0 | 0 | 0 |
| Jan 1 ✦ | vs. Kentucky | L 17–20 | 5 | 1 | 0.5 | 0 | 0 | 1 |
2020 Iowa 8 games, 45 tackles, 3 INT
| Date | Opponent | Result | Tkl | Solo | TFL | Sacks | Int | PD |
|---|---|---|---|---|---|---|---|---|
| Oct 24 | atPurdue | L 20–24 | 13 | 9 | 1 | 0 | 0 | 0 |
| Oct 31 | vs.Northwestern | L 20–21 | 5 | 2 | 0 | 0 | 1 | 0 |
| Nov 7 | vs. Michigan State | W 49–7 | 5 | 2 | 0.5 | 0 | 1 | 0 |
| Nov 13 | atMinnesota | W 35–7 | 2 | 2 | 0 | 0 | 1 | 1 |
| Nov 21 | atPenn State | W 41–21 | 5 | 3 | 0.5 | 0 | 0 | 0 |
| Nov 27 | vs.Nebraska | W 26–20 | 6 | 3 | 0 | 0 | 0 | 0 |
| Dec 5 | at Illinois | W 35–21 | 3 | 2 | 0 | 0 | 0 | 1 |
| Dec 12 | vs.Wisconsin | W 28–7 | 6 | 3 | 0 | 0 | 0 | 0 |
2019 Iowa 12 games, 81 tackles, 1 INT
| Date | Opponent | Result | Tkl | Solo | TFL | Sacks | Int | PD |
|---|---|---|---|---|---|---|---|---|
| Sep 7 | vs. Rutgers | W 30–0 | 4 | 2 | 0 | 0 | 0 | 0 |
| Sep 14 | atIowa State | W 18–17 | 8 | 5 | 0 | 0 | 0 | 2 |
| Sep 28 | vs. Middle Tennessee | W 48–3 | 3 | 2 | 0 | 0 | 0 | 0 |
| Oct 5 | atMichigan | L 3–10 | 5 | 4 | 0 | 0 | 0 | 1 |
| Oct 12 | vs.Penn State | L 12–17 | 13 | 4 | 0 | 0 | 0 | 0 |
| Oct 19 | vs.Purdue | W 26–20 | 5 | 3 | 0 | 0 | 0 | 1 |
| Oct 26 | atNorthwestern | W 20–0 | 5 | 3 | 0 | 0 | 0 | 0 |
| Nov 9 | atWisconsin | L 22–24 | 7 | 5 | 0 | 0 | 0 | 0 |
| Nov 16 | vs.Minnesota | W 23–19 | 5 | 5 | 0 | 0 | 0 | 1 |
| Nov 23 | vs.Illinois | W 19–10 | 7 | 5 | 0 | 0 | 0 | 0 |
| Nov 29 | atNebraska | W 27–24 | 11 | 5 | 0 | 0 | 1 | 0 |
| Dec 27 ✦ | vs. USC | W 49–24 | 8 | 6 | 1 | 0 | 0 | 0 |
2018 Iowa 1 game, 1 tackle
| Date | Opponent | Result | Tkl | Solo | TFL | Sacks | Int | PD |
|---|---|---|---|---|---|---|---|---|
| Oct 20 | vs.Maryland | W 23–0 | 1 | 0 | 0 | 0 | 0 | 0 |
Box scores from CollegeFootballData, 2004 on. ✦ postseason; ★ a career high on file.
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