The Red Sox went up from Triple-A Pawtucket to first baseman Sam Davis and, to make room for him in the roster of 25 players, sent that branch to Mexican right-hander Hector Velázquez.
Davis will be making his major league debut. With Pawtucket averaging .139 (36-5) in his first 10 games of 2017, but in his last 23 he leads .344 (90-31) with .909 OPS, six doubles, three home runs and eight walks .
After being a Minor League Offensive Player of the Year in Boston in 2015, Davis missed most of the following season because of a knee injury.
Velazquez, 28, made his Major League debut with the Red Sox on May 18 in Oakland, allowing six clean runs in 5.0 innings and beating the loss. In five starts for Pawtucket this year, the right-hander is 2-1 with a 1.55 ERA in 29.0 innings. In a four-out stretch, he threw 21.0 consecutive innings in white, including 6.0 perfect innings on April 30 against Gwinnett (Braves).