The Orix Buffaloes have acquired former Hanshin Tigers pitcher Akira Iwamoto and former Chicago White Sox minor leaguer Donn Roach, the Pacific League club announced Saturday.

Iwamoto, a 25-year-old right-hander, was the Tigers’ fourth pick in the 2010 draft but pitched in just 21 games for the Central League club, going 4-2 with a 2.64 ERA in 58 career innings.

Since last year, Iwamoto had been playing in Japan’s independent BC League and this season had a 1.50 ERA in 26 games for the Fukui Miracle Elephants.

“His pitching has been solid. He gives it his all in the bullpen and we wanted to add him to increase our depth,” said Hiroyuki Nagamura, the Tigers director of baseball operations.

Roach, a 28-year-old right-hander, has played in 21 total major league games with three different teams. Last year, he went 4-15 with a 4.69 ERA for South Korea’s KT Wiz. This season he is 9-2 with a 2.65 ERA, primarily as a starter for the White Sox’s Triple-A farm team.