The Cleveland Indians reportedly sent starting pitcher Zach Plesac home on Sunday after violating team rules in Chicago on Saturday night.

According to the Athletic, Plesac went out with friends following his start against the White Sox in which he threw six scoreless innings in the Indians’ 7-1 victory.

The MLB’s health and safety protocols in regards to the COVID-19 pandemic state that players or staff of the major league teams must notify the team’s compliance office if they’re leaving the hotel for any kind of reason.

Plesac must quarantine for the next three days and will be tested daily but the team can also apply extra measures to ensure the health and safety of the ball club.

The 25-year-old right hander has been great early on for the Indians who have the best pitching rotation in baseball this season. Plesac is 1-1 with a 1.29 ERA and a 24:2 strikeout to walk ratio in three starts this season. His next scheduled start is this coming Saturday against Detroit.