INDIANAPOLIS, AUG. 15 -- Feelings ran high at the 10th Pan American Games today. There was a miraculous, 6-4, bottom of the ninth victory for the U.S. baseball team over gold medal favorite Cuba, tensions resulting from a brawl between Cuban boxers and demonstrators Friday night, and Greg Foster's protest over his calamitous fall in the men's 110-meter hurdles just as he was leading.

And U.S. swimmers wrapped up a record-setting performance by winning all six races for the second consecutive day. They also won three silver medals. In all, they won 27 of 32 gold medals -- a Pan Am record.

Costa Rican standout Silvia Poll, who already had three gold medals, won two silver medals today. In all, she won eight medals in 13 races.

The only anticlimactic moment came when Carl Lewis could not attempt a world record as he qualified for Sunday's long jump final, settling for a second-place leap of 26 feet 5 1/4 inches as he struggled against the wind.

But the wind did not hamper Mike Tully, who set a Pan Am record as he won his expected gold medal in the pole vault with a jump of 18-8 1/4. Lavonna Martin of the United States also set a Pan Am record on her way to a gold medal in women's 110 hurdles, edging silver medalist Stephanie Hightower.

Elsewhere today, Michele Mitchell of Boca Raton, Fla., won the 100th gold medal for the United States when she easily took the platform diving event. The 1984 Olympic silver medalist had 453.96 points, a Pan Am record and more than 55 points more than Canada's Wendy Fuller.

Michelle Griglione of Alexandria, Va., won a silver medal in the women's 200-meter butterfly, losing to Kara McGrath of Birmingham, Mich. McGrath won in a time of 2:12.54; Griglione was second in 2:15.03.

Griglione, a 1986 graduate of T.C. Williams High School, led after the first 50 meters, but lost her lead to McGrath in the next 50 meters and never challenged. Shay McNicol of Canada won the bronze in 2:17.78.

In gymnastics, national champion Scott Johnson scored two 9.85s to win the all-around gold medal in men's competition, setting a Games record. Johnson beat Casimiro Suarez of Cuba, 116.25-115.50, breaking the record of 116.10 set by Suarez in 1983.

Suarez, who accused the judges of favoring the Americans earlier in the week, said Johnson deserved the victory. "Scott did a good job," Suarez said. "I feel a lot better today than previous days regarding the scoring. I still feel there were certain moments when I was a little bit under pressure in the apparatus."

Olympic bronze medalist Tim Daggett capitalized on errors by the Cubans and came from fifth place to win the bronze medal, edging Felix Aguilera, 115.05-115.00.

In softball, Rhonda Wheatley pitched a no-hitter and her second straight shutout as the United States remained unbeaten with a 1-0 victory over the Netherlands Antilles. The victory moved the U.S. women to 5-0 in the round-robin portion of the tournament.

In boxing, world champion Kenneth Gould scored a convincing win over Grenada's Bernard Wilson, and U.S. teammate Michael Collins also won as American and Cuban fighters remained unbeaten in boxing.

Gould, a 148-pounder, forced Wilson to take a standing eight-count in the second round by landing several lefts, but could not put his opponent down as he opened his quest for a gold medal with an easy win.

"Everybody here is a world-class fighter," Gould said. "You almost have to kill them to win."

Collins also had an easy time of it, scoring a unanimous decision at 119 pounds over Jose Pantaleon of the Dominican Republic.

Two Cuban fighters also advanced, both by knockout. Heavyweight Felix Savon, the world champion, wasted no time in stopping Julio Sanchez of Puerto Rico in the first round of their fight, and Juan Lemus knocked out Jamaica's Patrick Rose in the second round of their 147-pound fight.

That was in competition. Elsewhere, more controversy arose when Mario Vazquez Rana, the Pan American Sports Organization president, said medical officials were studying two potential cases of drug violations. Vazquez Rana said the drug tests were still being studied. He would not comment on which sports they came in until results were conclusive.

And the United States' victory on Ty Griffin's two-run homer in the ninth, his second of the game, over the world-renowned Cuban baseball team came in the aftermath of a controversial free-for-all at the boxing arena late Friday night. Cuban boxers and delegates rushed into the stands when they were heckled by anti-Castro protesters at the bout.

As a result, security was tight around the venues today, including at Indiana University Track Stadium. But no one noticed much as they concentrated on Lewis' preliminary jumps, and the five gold medals won in track and field by the United States.

In addition to victories by Tully and Martin, two more golds were decided in the men's and women's 200 meters. Floyd Heard edged Silva Robson of Brazil and Wallace Spearmon of the United States, respectively, with a time of 20.25. Gwen Torrance won a nearly dead-even sprint with fellow American Randy Givens to win in 22:52, with Pauline Davis of the Bahamas taking the bronze.

In the javelin, Duncan Atwood of the United States won the gold with a throw of 258-2. Atwood, who came back from a doping suspension to win the U.S. nationals earlier this year, technically established a Pan Am mark with the new javelin; there was no previous record using the latest equipment.

Lewis has said he hopes to overcome Bob Beamon's world record of 29-2 1/2 set in Mexico City in 1968. He has leaped well at Indiana University Stadium before, in 1982 jumping as far as 30 feet according to some spectators, before it was ruled a foul.

But swirling winds threw off his footwork today, and he ran through his first attempt. On his second, he left the track six to eight inches in front of the takeoff board for a jump of 26-5 1/4. Larry Myricks of the United States was first in the qualification with 26-5 3/4.

"It was just too windy," Lewis said. "I'm qualified, and that's the important thing. Tomorrow's another day. I just hope it's calm."

Foster, the 1984 Olympic silver medalist and 1983 world champion, is known for his spectacular crashes in big races, and has either fallen or not finished in 10 competitions over the last 4 1/2 years. Today he protested that he was "grabbed" as he tripped over the sixth hurdle of the race and ran through the seventh hurdle.

Foster pulled up and did not complete the race, which was won by Andrew Parker of Jamaica and Arizona State in 13.82. Foster said he was not injured, and immediately filed a protest, which was denied when officials ruled there was no evidence of contact on the race tape.

Foster was leading the race by a step over U.S. teammate Cletus Clark when both went down. He said he felt something or someone pull his right trailing leg as he barely got over the fifth hurdle, catching it with his foot, which then caused him to wreck on the sixth. He implied that it was Clark, to his right, who had smashed into his own fifth hurdle and fell to the ground just as Foster was rising.

Martin's record time of 12.81 in the women's 110 hurdles bettered the 13.02 she ran in the semifinals Monday. Martin and Hightower both trailed Aliuska Lopez of Cuba until the final 20 meters of the race.

But they surged past her together, and Martin won the photo finish over Hightower (12.82).

Tully's record came on his final vault. The old mark was Tully's 17-10 1/2 set in Caracas in 1983.

Staff writer Christine Brennan contributed to this report.