Diamondbacks Designate Mike Bolsinger, Charles Brewer

The D’backs have designated a pair of righties in Mike Bolsinger and Charles Brewer, according to Nick Piecoro of the Arizona Republic (via Twitter). The move was done in concert with the team’s 40-man additions today.

The 26-year-old Bolsinger threw 52 1/3 innings of 5.50 ERA ball at the MLB level last year, mostly as a starter. He managed a solid 8.3 K/9 against 2.9 BB/9 in that stretch, along with a 52.4% groundball rate, but was victimized by the long ball and the dreaded high BABIP/low strand rate combo. Across 193 2/3 career frames at the Triple-A level, Bolsinger has a 4.32 ERA with 8.6 K/9 against 3.3 BB/9.

As for Brewer, also 26, his six innings of big league action last year are insufficient to say much about his future. He has amassed 399 2/3 innings at Triple-A, putting up a 5.29 ERA along the way. Brewer has struck out 6.9 and walked 2.5 batters per nine, but has also allowed 10.8 hits per nine in that stretch.