Right-hander Ronald Muck relieved Newcomb to start the fifth and threw three scoreless innings. Right-hander Alan Busenitz finished the game with two perfect innings to earn his 16th save of the season.
Newcomb began the game with a strikeout, before Timber Rattlers center fielder Johnny Davis reached on a bunt hit. Newcomb retired the next 10 batters before giving up another single with two outs in the fourth. He then finished his night the same way he started it -- with a strikeout.
The Angels selected Newcomb with the 15th pick in the 2014 First-Year Player Draft. Newcomb is Hartford's all-time strikeout leader, but he only reached double-digit strikeouts in one game this season. He struck out 14 batters May 22 against Binghamton in the final start of his college career.
Because Newcomb threw 93 innings for Hartford this spring, the Angels have limited his workload since he signed in July. He has thrown 14 2/3 innings in six starts, and Wednesday was his longest outing.
Teddy Cahill is a reporter for MLB.com. Follow him on Twitter at @tedcahill. This story was not subject to the approval of Major League Baseball or its clubs.