Jason Kyle Canizaro (born July 4, 1973 in Beaumont, TX) is a former second baseman who spent parts of four seasons in the Major League Baseball (MLB) with the San Francisco Giants and the Minnesota Twins.

Canizaro was drafted by the Giants in 1993 in the fourth round of the draft after playing at Oklahoma State. He made his major league debut in 1996 with the team, but returned to the minors until 1999, when he was again called up. Following the 1999 season, he signed a contract with the Minnesota Twins. He enjoyed his best season in baseball with the Twins in 2000, hitting .269 as the Twins' primary second baseman. The 2002 season with the Twins was his last in the majors.

Jay became embroiled in the Barry Bonds/steroid scandal and as per Slate: "Canizaro, one-time journeyman second baseman, had spoken to me at length about his early years with the Giants, when he watched Bonds balloon from Lara Flynn Boyle to Lee Haney. A former steroid user, Canizaro knew all the signs of a juicer. Zit-coated skin. Peanut-sized testicles. Moodiness. And Bonds was a juicer.

'Hell, he took off his shirt the first day and his back just looked like a mountain of acne,” Canizaro told me. “Anybody who had any kind of intelligence or street smarts about them knew Barry was using some serious stuff.'” Jay has since backed off these statements.

(excerpted from Baseball Almanac, BR Bullpen & Wikipedia)