They had a pitchers' duel in El Paso yesterday, a 20-13 victory for Beaumont over the Diablos in the Class AA Texas League.

Pitchers' duel? You bet, compared to Saturday night's game:

El Paso 35, Beaumont 21.

The line score read 35 runs, 31 hits, three errors for the winners; 21 runs, 25 hits, six errors for the losers. The game lasted 3:39 and drew 6,412 fans. The combined runs and hits broke a league record that stood since Corsicana beat Texarkana, 51-3, in 1902--when there was no outfield fence and Texarkana had only two pitchers.

Jim Paciorek, brother of major leaguer Tom, was six for seven for El Paso; Stan Levi five for seven with seven RBI; Mike Felder got only two hits, yet batted in nine runs (grand slam, three-run homer, sacrifice fly, sacrifice squeeze) . . .

Manager Billy Martin will appeal his three-game suspension May 9 when the Yankees return to New York from an extended road trip, a team spokesman said.

Martin was ordered suspended and fined $5,000 Saturday by American League President Lee MacPhail after he kicked dirt on umpire Drew Coble Friday night during a game the Rangers won, 8-1, in Texas. He is continuing to manage the team pending the appeal . . .

Instant replays of close calls shown on the dazzling new scoreboard at Three Rivers Stadium are "brutal" and "a real menace," say umpires working Pittsburgh Pirates' games.

"That board's a disgrace," said umpire Bruce Froemming, who worked Saturday night's Pirates-Padres doubleheader and was given a hard time by San Diego's Luis Salazar over a call by umpire Harry Wendelstedt that the replay seemed to put in question. "There's gonna be a war . . . Those boards are designed to show good plays."

Umpire Terry Tata: "That thing is a time bomb . . . a real menace. You're talking about injury to umpires."

Pirates General Manager Harding Peterson said the scoreboard operator erred--"We've talked to her about not putting any more controversial plays up."