A preview of Friday's Olympic schedule, with an emphasis on athletes with Ann Arbor-area ties:

After nearly a week of swimming at the Olympic Aquatics Centre, Kara Lynn Joyce finally gets her chance.

The Pioneer High School graduate will compete in the 50-meter freestyle preliminaries Friday morning. It's the only race of these Games for the three-time Olympian, who has won two silver medals on U.S. relay teams.

She finished fifth in both the 50 and 100 freestyle races at the 2004 Olympics in Athens and was sixth in the 50 four years ago in Beijing.

"It is more than I ever thought I could accomplish," Joyce told AnnArbor.com before departing for London. "To have another shot is incredible.”

A decade after graduating from Pioneer, Joyce still holds the MHSAA state championship meet records in the 50 and 100-yard freestyle events. Her 200-yard freestyle record was broken in 2007 by current U.S. Swimming teammate Allison Schmitt, from Canton High School.

Joyce, who earned a trip to London by finishing second to Jessica Hardy at the U.S. Olympic trials, swims in the eighth of 10 preliminary heats that begin at 5 a.m. ET.

Her qualifying time of 24.17 seconds in the 12th-best. The top 16 times in the prelims advance to the 3 p.m. semifinals. The final is at 2:30 p.m. Saturday.

Last individual swim for Phelps

Michael Phelps has vowed that he will not swim competitively after these Olympic Games. That means there are two races left for the most-decorated athlete in Olympic history.

The former Michigan volunteer coach and Club Wolverine member -- who now owns 20 medals, 16 of them gold -- will swim the final of the 100 butterfly on Friday and the 4x100 medley relay on Saturday.

He's the top qualifier for the 100 fly, finishing a semifinal in 50.86 seconds, more than a half-second ahead of South African Chad le Clos, who upset Phelps in the 200 fly, and setting up a rematch with Milorad Cavic, the outspoken Serbian who still seems to think he got to the wall first when he lost to Phelps by a hundredth of a second four years ago in Beijing.

Cavic -- who lived and trained with current Michigan swimming coach Mike Bottom prior to the Games -- is talking a different game now.

He doesn't think he (or anyone else) has a chance against Phelps in the last individual race of his Olympic career.

"Phelps is out of our league," Cavic said. "It's not fair that I'm talking for everybody, but I'm expecting something special tomorrow. I think he's going to go 50.5."

Connor Jaeger in 1,500

Michigan junior Connor Jaeger will compete in the prelims of the grueling 1,500-meter freestyle on Friday morning. The top eight from four heats advance to Saturday's final.

When Jaeger finished less than a second behind Andrew Gemmell at the U.S. Olympic trials, it was just the fifth time he had completed a 1,500 race.

Getting on the track

The first day of Olympic track events -- or "athletics" -- is Friday, and both the University of Michigan and Eastern Michigan University will be represented by international competitors.

Eastern Michigan graduate Eric Alejandro, representing Puerto Rico, will run the 400-meter hurdles preliminaries at 6:15 a.m.

Former Wolverine teammates Nick Willis and Nate Brannen will compete in the prelims of the 1,500-meter run at 3:05 p.m. Willis was the flag bearer for his native New Zealand and Brannen competes for his native Canada.

Uhunoma Osazuwa -- a U-M Doctor of Pharmacy student -- competes in the opening events of the heptathlon. She represents Nigeria.

Water polo, take 3

The U.S. women's water polo team plays its third pool play game against China at 2:40 p.m. Betsey Armstrong, Huron High School and University of Michigan graduate, is the team's goalkeeper.

The Americans beat Hungary and tied Spain in its first two matches. Pool play determines seeding for the eight-team, single-elimination medal tournament.

FRIDAY'S SCHEDULE
(All times EDT, subject to change)

Archery Men's Individual 1/8 eliminations, 4 a.m.
Men's Individual quarterfinals, semifinals, bronze and gold medal matches, 9 a.m.

Athletics

Men's 400 Hurdles round 1, 3000 Steeplechase round 1, Hammer qualifying, Shot Put qualifying; Women's 100 classification heats, 400 round 1, Triple Jump qualifying, Heptathlon 100 hurdles, high jump, 5 a.m.

Men's 1500 round 1, Long Jump qualifying, Shot Put final; Women's 100 round 1, 10,000 final, Discus qualifying, Heptathlon: shot put, 200, 2 p.m.

Badminton
Women's Singles semifinals; Mixed Doubles bronze medal match, 4 a.m.
Men's Singles semifinals; Mixed Doubles gold medal match, 8:30 a.m.

Women's Basketball
Angola vs. Croatia, 4 a.m.
Russia vs. Australia, 6:15 a.m.
Brazil vs. Canada, 9:30 a.m.
Turkey vs. China, 11:45 a.m.
France vs. Britain, 3 p.m.
Czech Republic vs. United States, 5:15 p.m.

Beach Volleyball
Men's round of 16 (1 match), 4 a.m.
Women's round of 16 (1 match), 4 a.m.
Men's round of 16 (1 match), 8 a.m.
Women's round of 16 (1 match), 8 a.m.
Men's round of 16 (1 match) Noon
Women's round of 16 (1 match) Noon
Men's round of 16 (1 match), 4 p.m.
Women's round of 16 (1 match), 4 p.m.

Boxing
Men's Flyweight (52kg) and Men's Welterweight (69kg) round of 16, 8:30 a.m.
Men's Flyweight (52kg) and Men's Welterweight (69kg) round of 16, 3:30 p.m.

Cycling (Track)
Men's Team Pursuit round 1, finals; Women's Keirin round 1 & repechages, round 2, finals; Women's Team Pursuit qualifying, 11 a.m.

Diving
Women's 3-Meter Springboard Prelims, 9:30 a.m.

Equestrian (Dressage)
Team Dressage: day 2, 6 a.m.

Fencing
Men's Team Sabre round of 16, quarterfinals, classifications (5th-8th places), semifinals, 5:30 a.m.
Men's Team Sabre bronze medal match, gold medal match, 1 p.m.

Men's Field Hockey
Australia vs. Argentina, 3:30 a.m.
Netherlands vs. New Zealand, 5:45 a.m.
Germany vs. India, 8:45 a.m.
Britain vs. Pakistan, 11 a.m.
South Africa vs. Spain, 2 p.m.
Belgium vs. South Korea, 4:15 p.m.

Gymnastics
Men's Trampoline qualification, final, 9 a.m.

Judo
Men's +100kg and Women's +78kg elimination rounds, quarterfinals, 4:30 a.m.
Men's +100kg and Women's +78kg repechages, semifinal contests, bronze and gold medal contests, 9 a.m.

Rowing
Men's Pairs classification and final, Single Sculls and Quadruple Sculls classification and final; Women's Double Sculls classification and final, 4:30 a.m.

Sailing Men's 49er, 470, Finn, Laser, Star; Women's 470, Laser Radial, 7 a.m.

Shooting Men's 25-meter Rapid Fire Pistol qualification (Stage 2) and final; Men's 50-meter Rifle Prone qualification and final, 4 a.m.

Women's Soccer
Sweden vs. France, 7 a.m.
United States vs. New Zealand, 9:30 a.m.
Brazil vs. Japan, Noon
Britain vs. Canada, 2:30 p.m.

Swimming
Men's 1500 Freestyle, 4X100 Medley Relay heats; Women's 50 Freestyle, 4X100 Medley Relay heats, 5 a.m.

Men's 50 Freestyle final, 100 Butterfly final; Women's 50 Freestyle semifinals, 200 Backstroke final, 800 Freestyle final, 2:30 p.m.

Table Tennis
Women's Team first round, 5 a.m.
Women's Team first round, 9:30 a.m.
Men's Team first round, 2 p.m.

Women's Team Handball
Angola vs. Britain, 4:30 a.m.
South Korea vs. France, 6:15 a.m.
Croatia vs. Montenegro, 9:30 a.m.
Russia vs. Brazil, 11:15 a.m.
Spain vs. Sweden, 2:30 p.m.
Denmark vs. Norway, 4:15 p.m.

Tennis
Men's and women's Singles semifinals; Mixed Doubles semifinals; Mixed Doubles semifinals, 7 a.m.

Women's Volleyball
Brazil vs. China, 4:30 a.m.
Japan vs. Russia, 6:30 a.m.
Turkey vs. South Korea, 9:45 a.m.
Britain vs. Dominican Republic, 11:45 a.m.
United States vs. Serbia, 3 p.m.
Algeria vs. Italy, 5 p.m.

Women's Water Polo
Spain vs. Hungary, 9:10 a.m.
Russia vs. Australia, 10:30 a.m.
Britain vs. Italy, 1:20 p.m.
China vs. United States, 2:40 p.m.

Weightlifting
Men's 85kg group B and Women's 75kg group B, 5 a.m.
Women's 75kg group A (medal), 10:30 a.m.
Men's 85kg group A (medal), 2 p.m.

The Associated Press contributed to this report.