The Giants prospect fanned 10 over four dominant frames Friday before the Squirrels dropped a 7-1 decision to the visiting New Britain Rock Cats.
Pitching in a light rain, Surkamp struck out two batters in each of the first two innings. He gave up a leadoff single in the third to Deibinson Romero and walked Allan de San Miguel before fanning Mike Hollimon, Yangervis Solarte and Ray Chang.
In the fourth, the 23-year-old left-hander struck out Chris Parmelee and Joe Benson before Evan Bigley doubled. But Surkamp got Mark Dolenc to look at a called third strike on his 71st and final pitch of the night.
The 10 strikeouts tied the team mark set by David Mixon last July 18 but are four shy of the career high Surkamp established last July 7 for Class A Advanced San Jose. The North Carolina State product went 4-2 with a 3.11 ERA and a complete game in 17 starts en route to earning California League postseason All-Star status.
Selected by the Giants in the sixth round of the 2008 Draft, Surkamp had a breakout season with Class A Augusta the following summer. He was 11-5 with a 3.30 ERA in 23 starts and ranked second in the South Atlantic League with 169 strikeouts in 131 innings.