SAN DIEGO — Like Cal Ripken Jr., Tony Gwynn will be going, going, gone at season's end.
Gwynn, arguably the best pure hitter of his generation, is expected to announce Thursday that he will retire at the end of this season, his 20th with the San Diego Padres.
Wednesday night in Denver, teammate Rickey Henderson confirmed the news as the Padres finished a six-game trip.
"He told me he was going to announce it, I think when we get back home," Henderson said after the Padres' 10-9 loss to Colorado.
Gwynn, who's been on the disabled list since May 10, was not available for comment after the game.
Earlier Wednesday, USA Today's Baseball Weekly reported on USAToday.com that Gwynn will retire at season's end.
"Nobody wants to believe it now," Gwynn told Baseball Weekly from his hotel room in Denver, "but I knew this would be my last year before the year started. It was predetermined. No matter what I did this year, I knew it would be my last.
"I'll have a press conference to get it off my chest, and then I'll be at peace."
Gwynn, 41, has struggled to get back into the Padres' outfield because of a strained right hamstring that's sidelined him for most of the season.
After the game, Bochy said he did not know Gwynn's plans.
"He's done a lot for San Diego. It's been frustrating for him with his injuries, and hopefully we'll get him back out here," he said.
Gwynn has a lifetime .338 average. Hall of Famer Ted Williams, a San Diego native, hit .344, the only player in baseball with a higher batting average than Gwynn since World War II.
Gwynn's best year was 1994, when he was batting .394 when the players' strike began. It was the highest in the majors since Williams batted .406 in 1941.
Gwynn got his 3,000th hit on Aug. 6, 1999, at Montreal.
He reached the World Series twice, but the Padres lost to the Detroit Tigers in 1984 and the New York Yankees in 1998.