The Peninsula Pilots scored four runs in the top of the ninth to spoil Alexandria's bid for a second straight comeback win yesterday, beating the Mariners, 11-6, in a Carolina League game at Four Mile Run Park.

The Mariners fell behind, 7-1, in the seventh as the Pilots sent 10 men to the plate, scoring five runs on four hits, one error and a walk. Bob Dernier's two-run single was the key blow in the inning. Dernier and shortstop Tony McDonald each had three hits on the day.

In the bottom of the seventh, the Mariners retaliated with four runs on doubles by Tom Mee and Dave Valle, followed by three straight singles by Chuck Lindsay, Carlos Matamoras and Tito Nanni.

In the eighth, the Mariners drew to 7-6 on a Valle walk and an RBI double by John Randolph, who also had two singles.

The Pilots got to Mariner reliever Rick Graser in the top of the ninth for four runs. The Pilots loaded the bases on a single by Wayne Williams, an error by Graser and an intentional walk to Steve Curry. Graser walked pinch hitter Jose Castro, forcing in one run and gave up a two-run double to pinch hitter Butch Ballard. Mike Ibarra's ground out off reliever Ron Musselman allowed the final run.