Mata was promoted to Triple-A Worcester on Sunday, Christopher Smith of The Springfield Republican reports.
Mata missed the 2021 season due to Tommy John surgery and spent the start of this year continuing to recover. However, he performed well after being activated at Double-A Portland, posting a 1.85 ERA and 1.20 WHIP in 48.2 innings over 10 appearances (nine starts). He's expected to make his first start at Worcester sometime this week.