Stephen Kolek

The Royals signed RHP Stephen Kolek to a deal for the 2026 season.

Fantasy Impact

Kolek posted a 1.91 ERA across 33 innings over five starts last season for Kansas City. He'll add pitching depth for the Royals.

Stephen Kolek allowed two earned runs on five hits and two walks while striking out two over six innings in Wednesday's loss to the Angels.

Fantasy Impact

Kolek is not slated to make another start before the end of the regular season. He will finish the year with a 3.51 ERA and 1.15 WHIP with a 5-7 record across 19 starts this season.

Stephen Kolek allowed one earned run on two hits and one walk while striking out eight over 7.1 innings in Thursday's loss to the Mariners.

Fantasy Impact

After today’s performance, Kolek now has a 3.54 ERA and 1.14 WHIP to go with a 5-6 record across 18 starts this season. Since arriving in Kansas City, Kolek has dished out four straight quality starts. During that stretch, he has a 1.67 ERA, 0.66 WHIP, and 6.3 K/9. He's in line to face the Angels in his last regular season start of the season.

Stephen Kolek allowed one earned run on three hits and one walk while striking out four over 6.2 innings in Thursday's defeat against the Cleveland Guardians.

Fantasy Impact

After today’s performance, Kolek now holds a 3.71 ERA and 1.20 WHIP with a 5-5 record across 17 starts this season. In three starts since being acquired by the Royals, he has three quality starts. In those 19.2 innings, he is 1-0 with a 1.83 ERA, 0.76 WHIP and 5 K/9. He's looking at a matchup with the white-hot Mariners next week.

Stephen Kolek allowed two earned runs on six hits and one walk while striking out four over seven innings in Saturday's win against the Twins.

Fantasy Impact

The right-hander continues a solid stretch in limited appearances since August, allowing two runs or less in each of his last two starts for the Royals. After yesterday’s performance, Kolek now has a 3.88 ERA and 1.24 WHIP to go with a 5-5 record across 16 starts this season.