(Reuters) - Three times world 200 meters champion Allyson Felix could run in as many as four events at August's world championships, according to the relay pools released by USA Track & Field (USATF) on Tuesday.
The California sprinter, already thinking about a rare 200 metres/400 meters individual double, was named to initial U.S. women's world championship pools for both the 4x100 and 4x400 meters relays.
If selected for both relays, Felix would have a chance to duplicate her 2007 world championship success when she won golds in both relays and the 200 meters.
She indicated recently she would like to try both relays along with one or two individual events at the August 27-September 4 world championships in Daegu, South Korea.
Initial pools for the men's 4x100 meters relay and the men's and women's 4x400 also were announced by USATF.
Absent are former world double sprint champion Tyson Gay from the men's 4x100 pool and reigning Olympic and world champion LaShawn Merritt from the 4x400.
Gay pulled out of the June 24 U.S. championships men's 100 semi-finals with a hip injury and the relay was his final chance to compete in this year's worlds.
Merritt, who completes a 21-month doping suspension on July 27, could be added later, a USATF spokeswoman said.
Although he did not run in the U.S. world trials last month, Merritt was given a spot on the U.S. team roster last week as the reigning world 400 meters champion. All roster members are eligible for relay spots.
Merritt's selection likely will depend on his fitness after he becomes eligible. He has run on the last three U.S. 4x400 relay teams to win gold medals at global competitions.
The United States has until August 8 to finalize its championship roster, including naming six athletes to each relay pool.








Merritt needed an exception to USATF team policy to claim a wild-card berth in the world championships as the reigning champion.
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