Veteran kicker Sebastian Janikowski, the Raiders' all-time leading scorer, is done for the season and possibly for his career with the team that made him a first-round draft pick in 2000 out of Florida State. Oakland opened a practice window for cornerback Antonio Hamilton off injured reserve on Tuesday. It was the second of two such available windows -- the first was used for rookie safety Obi Melifonwu -- leaving no room for Janikowski to be activated. Janikowski took a $1 million paycut at the end of training camp to get the final year of his contract to $3 million for 2017. He went on IR the day before the season opener with a back issue. Giorgio Tavecchio, who spent the previous four training camps with Oakland, was signed off the practice squad and has not looked back, converting 12 of 15 field goal attempts, including 3 of 4 from at least 50 yards, and 25 of 26 extra point attempts. Janikowski was drafted No. 17 overall by Raiders owner Al Davis, when then-coach Jon Gruden favored either receiver Sylvester Morris or running back Shaun Alexander. Morris played just one season in the NFL, for Kansas City; Alexander played for nine years and was the league MVP for Seattle in 2005. Only two players from that 2000 draft remain active in the NFL: Houston Texans punter Shane Lechler, who was drafted in the fifth round by Oakland, and New England Patriots quarterback Tom Brady, taken in the sixth round.