The first active Division I-A athlete to sue the NCAA over concussions wants out of the lawsuit.

"I am no longer a plaintiff in the lawsuit filed in U.S. District Court for the Northern District of Illinois vs. NCAA," Stanford runner Jessica Tonn wrote in an email. "While I am supportive of advocacy for concussion awareness, I have no desire to be involved in legal matters of this or any other sort."

Filed Wednesday, the complaint alleged the NCAA inadequately educated athletes and coaches about concussions and didn't implement return-to-play guidelines. The complaint said Tonn "suffered a head injury as a member of the track team" at Stanford and "needs medical monitoring."

"Jessica doesn't feel she can commit the time necessary to see this through," attorney Robert Carey said.

Tonn, who finished 16th at the NCAA cross country meet in 2013, didn't respond to a request for further comment.

  • Cal maintained the lead after the third day of the Pac-12 men's swimming and diving championships in Federal Way, Wash. Josh Prenot won the 400-yard individual medley and Ryan Murphy took the 100 backstroke as Cal has amassed 545 points after 14 events. Stanford is second at 471, as David Nolan placed second in the 100 backstroke.

  • Cal (8-4) squandered a 5-0 lead and fell to Tulane 10-5 at the Cal Baseball Classic. Tulane had a seven-run fifth inning. Also, USF (6-6) beat Arkansas 2-1.

    Kansas scored twice in the 13th inning for a 4-2 win over Stanford (5-8). Brant Whiting's RBI single in the bottom of the ninth had tied it for Stanford. The Cardinal, though, didn't score in the 12th despite loading the bases with no outs.

    Saint Mary's (6-7) had 13 hits en route to a 6-2 win over Penn State. The Gaels' Anthony Gonsolin had three hits to raise his average to .383. ... Zach Looney had three hits, but Santa Clara (6-9) fell to UC Davis 3-2. ... Washington had 16 hits in a 7-0 rout of San Jose State (4-11).

  • No. 22 Stanford scored six times in the first inning en route to a 10-0 softball rout of visiting Portland State. But the Cardinal (19-6) was limited to four hits in a 4-0 loss to North Dakota State.

    Wire services contributed to this report.