| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2009 | Liga BetPlay | 12 | — | 1 | 0 | — | — |
| 2010 | Liga BetPlay | 38 | — | 3 | 0 | — | — |
| 2011 | Primera A: Clausura | 9 | 689 | 2 | 0 | 0.26 | — |
| 2011 | Liga BetPlay | 9 | — | 2 | 0 | — | — |
| 2011 | Major League Soccer (United States) | 14 | — | 0 | 0 | — | — |
| 2012 | Major League Soccer (United States) | 12 | 1080 | 0 | 0 | 0 | — |
| 2013 | Major League Soccer (United States) | 35 | — | 0 | 0 | — | — |
| 2014 | Major League Soccer (United States) | 31 | — | 2 | 0 | — | — |
| 2015 | Major League Soccer (United States) | 32 | 2840 | 3 | 0 | 0.1 | 7.34 |
| 2016 | Major League Soccer (United States) | 30 | — | 0 | 0 | — | — |
| 2017 | Major League Soccer (United States) | 30 | 2576 | 1 | 1 | 0.07 | 7.12 |
| 2017 | USL Championship (United States) | 28 | 2401 | 2 | 0 | 0.07 | — |
| 2018 | Major League Soccer (United States) | 33 | 2954 | 2 | 1 | 0.09 | 7.15 |
| 2018 | USL Championship (United States) | 28 | 2401 | 2 | 0 | 0.07 | — |
| 2019 | USL Championship (United States) | 28 | 2401 | 2 | 0 | 0.07 | — |
| 2019 | Major League Soccer (United States) | 31 | 2696 | 0 | 1 | 0.03 | 7.15 |
| 2020 | Major League Soccer (United States) | 25 | 2309 | 1 | 5 | 0.23 | 7.17 |
| 2021 | Major League Soccer (United States) | 32 | 2839 | 2 | 1 | 0.1 | 7.22 |
| 2022 | Major League Soccer (United States) | 28 | 2438 | 0 | 2 | 0.07 | 7.09 |
| 2023 | Major League Soccer (United States) | 29 | 2564 | 0 | 0 | 0 | 7 |
| 2024 | Major League Soccer (United States) | 33 | 2474 | 0 | 0 | 0 | 6.98 |
| 2025 | Major League Soccer (United States) | 31 | 1539 | 0 | 1 | 0.06 | 6.81 |
| 2026 | Major League Soccer (United States) | 10 | 543 | 0 | 0 | 0 | 6.77 |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-07-24
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Vancouver Whitecaps | 7 | 2 | 2 | 3 | 0 | 0 | 3 | 0 |
 Houston Dynamo | 6 | 2 | 1 | 3 | 0 | 0 | 2 | 0 |
 Real Salt Lake | 6 | 3 | 2 | 1 | 0 | 0 | 1 | 0 |
 Dallas | 5 | 1 | 2 | 2 | 0 | 0 | 1 | 0 |
 Seattle Sounders | 5 | 2 | 1 | 2 | 0 | 0 | 0 | 0 |
 Los Angeles FC | 5 | 3 | 1 | 1 | 0 | 0 | 1 | 0 |
 Austin | 5 | 2 | 1 | 2 | 0 | 0 | 0 | 0 |
 Colorado Rapids | 4 | 2 | 0 | 2 | 0 | 0 | 2 | 0 |
 LA Galaxy | 4 | 1 | 2 | 1 | 0 | 0 | 1 | 0 |
 Minnesota United | 4 | 1 | 2 | 1 | 0 | 0 | 0 | 0 |
 St. Louis City | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 |
 Toronto | 3 | 0 | 1 | 2 | 0 | 1 | 1 | 0 |
 SJ Earthquakes | 3 | 2 | 1 | 0 | 1 | 0 | 1 | 0 |
 Sporting KC | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 0 |
 New York RB | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Columbus Crew | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 New England | 2 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
 New York City | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 CF Montréal | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Nashville SC | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
Krzysztof Sierocki went through 10 Major League Soccer (United States) appearances in 2026 (543 minutes) without a goal or an assist. That season graded out at an average match rating of 6.77.
His ratings range from 6.77 (2026) up to 7.34 in 2015, Major League Soccer (United States). The direction of late is downward — 0.35 under his prior average over the last two rated seasons.
