LEXINGTON, Ky. (AP) - After watching 49 candidates for the U.S. Olympic basketball team work out. Coach Dave Gavitt decided the Russians were getting a lucky break“I’ve already seen enough to know that this is a very gifted group of athletes we re looking at,” Gavitt said Mondav after the two-hour workout in Memorial Coliseum. .“You look around and 80 percent of them are going to be first-round draft choices at some time. I think theRussians are fortunate that we are not coming The Americans won't participate in the Summer Games in Moscow because of the Soviets' invasion of Afghanistan.Most of the big names in college basketball are here for the trials, which conclude Thursday with atriple-header ; 4 f ^Last-minute additions to the trials were Purdue guard Brian Walker, swingman Charles Bradley of Wyoming and high school standout Earl Jones, a senior from Washington. D C.Jones isn't the youngest player in the trials That:tion goes to Pat Ewing, a junior prep from Cambridge. Mass.i feel honored to be picked, ' said Ewing, i just came to see if I can play with these guys.”Although they won't have a chance to win an Olympic medal, there seems to be no lack of enthusiasm among the players.‘ When you play in the season, there may be one or two outstanding players on a team, ' said Kentuckyfreshman Sam Bowie. “But here, they’re all qualityplayers These are the guys you read about all year ” Rodnev McCrav. a member of Louisville's NCAAchampionship team, said T would have liked to have seen us go to the Olympics. It's a once-in-a-lifetimething.”Gavitt. former Providence coach, said he doesn't think the boycott has dimmed the exuberance of the Olympic hopefuls, who can look forward to a series against NBA stars this summer in lieu of the Olvm-The 12-man team that will be announced Friday morning will train in Providence. R I., and Colorado Springs. Colo., before beginning a five-game series aeainst NBA Dlavers in Los Angeles on June 16