Bob Zavarick and Steve Johnson each had three hits, including three-run home runs, as Maryland easily defeated George Washington, 17-7, yesterday at Shipley Field.

The victory, the Terrapins' 17th in a row at home, raised their record to 9-5. GW fell to 10-14.

Zavarick's home run, a line shot over the right-center field fence highlighted a four-run sixth inning as Maryland took a 10-6 lead and knocked out GW's started and loser, Kenny Lake (2-2).

Johnson's home run went to the opposite field, down the right field line, and drew Maryland to a 4-4 tie in the second inning.

GW took advantage of Maryland starter Mike Romanovsky's wildness to score three runs in the second inning. Romanovsky walked two batters and hit two others in the inning. Rich Lamont's RBI double was the Colonials' key hit.

John Brisee's RBI single and a sacrifice fly by Tom Weider gave Maryland a 6-4 lead after three. GW tied the game in the fourth and knocked out Romanovsky. Two errors and Rod Peters' run-scoring double off reliever Robert Payne tied the score at 6. Peters had hit a home run in the first.

That set the stage for Maryland's four-run sixth. Welder doubled and scored on shortstop Russ Ramsey's error. Johnson followed with a single, and, after Jeff Schaefer flied out, Zavarick hit his second home run of the season.

Maryland added seven insurance runs in the eighth. A long two-run home run by Steve Johansen, a two-run double by Brisee, a two-run single by Tom Gordon and an RBI single by Tony Larioni accounted for the runs.

Payne allowed one run and five hits in 5 2/3 innings of impressive relief to gain his first win without a loss. He struck out four and walked one.