Ed Connors hit a two-out, grandslam home run in the first inning and the Carolina League-leading Winston-Salem Rex Sox strolled to a 7-3 victory over the Alexandria Mariners at Four Mile Run Park last night.

After Mariner starter Bob Simond retired the first two batters, a single, an error by third baseman Gary Pellant and a walk set the scene for third baseman Connors. All four runs were unearned.

The Red Sox piled on two more scores in the second on a two-run single by second baseman Erwin Brysant. While Simond retired the Red Sox without incident through the next three innings, the Mariners continuously left men on base in their turns at bat.

The Mariners were guilty of several errors in judgment, the most notable being a tendency to swing at the first pitch. Seven times they conneced with the first offering and were out on each occassion.

Simond departed after surrendering two singles and a pair of walks to the first four batters in the Red Sox sixth inning. Replacement Jeff Cary got out of the inning with two infield pop-ups and a striekout.

The Mariners, who scored an unearned run in the sixth, staged a minirally in the ninth to chase Steve Crawford. Gary Skow led off with a walk and Tom Mee followed with a single to send Crawford to the showers.

Reliever David Schoppee retired John Randolph on a fly ball and got a force play at second before second baseman Carlos Matamoras singled home two runs.Tito Nanni poppes to short to end the rally. CAPTION: Picture 1, John Lickert lays down bunt for a single for Winston-Salem against the Alexandria Mariners, whose catcher is Gary Skow. Red Sox beat Mariners, 7-3, on grand-slam homer. By Joe Helberger-The Washington Post; Picture 2, Oscar Gamble scores on a sacrifice fly for the Rangers as Blue Jay catcher Rick Cerone looks toward the umpire. AP