D-backs add 7 to roster, including first-time callup Matt Koch

PHOENIX — With the end of Class Triple-A Reno’s season, the Diamondbacks promoted five players from the Aces to their major-league roster and also reinstated pitcher Andrew Chafin and catcher Chris Herrmann from the 15-day disabled list.

The five players being called up include four who have spent time in the major leagues this season — left-handed pitcher Steve Hathaway, right-handed pitcher Dominic Leone and outfielders Mitch Haniger and Peter O’Brien — and one who will be in the majors for the first time — right-handed pitcher Matt Koch.

Matt Koch

Koch, 25, was 6-6 with a 4.08 ERA in 21 starts with Reno and Double-A Mobile.

Hathaway, who has appeared in 14 games for the D-backs, is 2-3 with a 2.60 ERA in 45 minor-league innings. Leone has appeared in 20 games for the D-backs in addition to 33 games at Reno, where he was 5-2 with a 3.34 ERA.

Haniger, who saw action in 10 games for the D-backs last month, hitting .237, had a .321 minor-league average with 25 homers and 94 RBI. O’Brien has four home runs and had a .123 average for the D-backs in 21 games. In 105 games at Reno, he hit .254 with 24 homers.

Chafin made seven minor-league appearances while rehabbing from left shoulder tendinitis. Herrmann played in 10 rehab games while recovering from a strained left hamstring.