Biggio, who reached 3,000 hits in June 28, was scheduled to hold a news conference before the Houston Astros hosted the Los Angeles Dodgers and the purpose of the announcement was to announce his retirement plans, a person familiar with the arrangements said. The person spoke on condition of anonymity because he wasn't authorized to speak publicly.

Biggio's decision was reported earlier today by MLB.com.

The 41-year-old, in his 20th major league season, is batting .247 with 24 doubles, five homers and 31 RBIs. He began today with 3,014 hits, six shy of tying Rafael Palmeiro for 23rd place.

Biggio has played his entire major league career with the Astros, becoming the longest-tenured player in franchise history. He is the only player in major league history with 600 doubles, 250 homers, 3,000 hits and 400 steals.

Biggio's 3,000th hit came one day shy of the 19th anniversary of his first career hit, a single off Orel Hershiser on June 29, 1988.

During his two decades with the Astros, Biggio has become known in the city as much for his charitable work as for his play. He has been the national spokesman for the Sunshine Kids Foundation, which helps children with cancer, for more than a decade.