Last week we wrote about how the A's bullpen has been terrific , even after the Mason Miller trade, holding the second-best ERA in baseball since the deal. In the time that has passed since that went up, A's relievers have posted an 8.55 ERA, ranking them 29th in MLB. With the struggles of the bullpen on full display on Tuesday night and a fresh arm needed, the A's are reportedly calling up veteran Brooks Kriske ahead of Wednesday's contest against the Philadelphia Phillies. The A's signed the 32-year-old to a minor-league deal in December, and he has been in Triple-A with the Las Vegas Aviators to begin the season. He's made 10 appearances totaling 16 innings and holds a 2.25 ERA (3.63 FIP) with a 1.38 WHIP. Batters are also hitting just .196 against him this season. Kriske looks like the type of arm that can go multiple innings — which the A's desperately need right now — and he's had a lot of success piling up strikeouts, holding a 37.3% strikeout rate.…