National championships without Carl Lewis, Edwin Moses, Greg Foster, Jackie Joyner-Kersee and Evelyn Ashford? The show goes on at the Mobil Outdoor Track and Field Championships, but it's hard to overlook the absence of some of the sport's biggest stars.

Except for an impressive performance by Lynda Tolbert in the women's 100-meter hurdles, Thursday was marked by the lowest winning point total in the heptathlon since 1981 as well as the second slowest winning time in the women's 10,000 meters in the past 11 years.Nevertheless, Sheila Tarr and Carol Urish-McLatchie are national champions after winning the only finals contested on the second day of the four-day meet at Pepin-Rood Stadium. Tarr took the heptathlon after nine-time national champion Jane Frederick withdrew with an injury, and Urish-McLatchie finished more than 100 meters ahead of Judy Bogenshutz in the 10,000.

Tarr, the 1984 NCAA champion from Nevada-Las Vegas, completed the seven-event heptathlon with a personal-best 5,881 points, 20 more than runnerup Cathey Tyree. Still, it was nearly 1,100 points short of Joyner-Kersee's meet record.

With Joyner-Kersee skipping the meet to save herself for next month's U.S. Olympic Trials at Indianapolis, Frederick amassed a commanding 355-point lead after four events of the two-day heptathlon competition that began Wednesday. After leaping just 15 feet on her first attempt in the long jump, Thursday's first event, she withdrew with a jammed knee and strained left hamstring.

Finals are scheduled Friday in 12 events, including the men's and women's hurdles, which produced some of the better performances in Thursday's qualifying.