Maryland football coach Joe Krivak still is playing it close to the vest as to what kind of offensive sets the Terrapins will use in Saturday's season opener against Virginia Tech at Byrd Stadium.

"And we're going to play it as close as we can unitl 12:10 p.m.," he said with a laugh. "Even when we warm up, we may not show anything."

Because of a surplus of talented wide receivers and a lack of experience at running back, the Terrapins are expected to use a one-back, four-wideout offense the majority of the time against the Hokies.

I'm sure everyone, including Virginia Tech, knows what's going on, but we're just not going to talk about it," Krivak said. Mum on Mason Too

Krivak also is not talking about how much one of his running backs, freshman Mark Mason from Churchill High, will be used. Krivak is concerned how the 5-foot-8, 180-pounder will stand up to the pounding from bigger players, but this week those questions may have been answered. Krivak was ecstatic when Mason bounced right up after being smashed in practice by huge defensive linemen Larry Webster and Rick Fleece.

"We've got to see what happens," Krivak said. "He's practiced well. If the situation calls for it, I'll have no problem putting him into the game."

Mason may see action as early as the second quarter. There was talk he might open the game returning punts and kickoffs, but Krivak said, "I wouldn't put him out there in that situation right away." . . .

Another running back, Andre Vaughn, will not play because of stretched knee ligaments. A number of players are banged up, but Vaughn likely will be the only absentee.