ALAMEDA, Calif. -- The Raiders are likely to be without starting right tackle Menelik Watson and a key backup for their home opener.Watson missed practice Friday because of a groin injury suffered early in Oaklands opening week win over New Orleans. Matt McCants, who replaced Watson briefly, went down with a knee injury and has been sidelined since.Both linemen are listed as doubtful on the Raiders injury report.Austin Howard, who was inactive against the Saints with an ankle injury suffered in the Raiders final preseason game, is expected to start in place of Watson. Howard started 13 games at right tackle in 2015 after playing right guard the previous season.Hes ready to go, Raiders coach Jack Del Rio said.The Raiders season-opening win took its toll on the offensive line.Watson and McCants injuries set off a domino effect that wound up with Donald Penn moving from left tackle to right guard, left guard Kelechi Osemele moving to left tackle and Jon Feliciano coming off the bench to plug the gap at left guard.Center Rodney Hudson and right guard Gabe Jackson also missed time this week with knee injuries but both made it through two consecutive days of practice and are questionable to play against the Atlanta Falcons on Sunday.Del Rio noted earlier this week that the situation in New Orleans had gotten so dire that the Raiders were prepared to use tight end Lee Smith if another injury to the front five had occurred.Oakland should be better prepared to handle things this week. Seventh-round draft pick Vadal Alexander, who was also inactive against the Saints, practiced at both guard and tackle during the preseason and is an option should more injuries occur.Were ready to adjust as we need to, Del Rio said. Weve got good depth, have a good coach working the group. Well be ready to roll.Despite all of the injuries and shuffling up front, Raiders quarterback Derek Carr was not sacked and was hit only three times when dropping back to pass.Part of that was due to Penn and Osemele, who continued to play well after changing positions.Osemele, in particular, stood out and made a pivotal block that helped spring rookie running back Jaylen Richard free on his 75-yard touchdown. The 6-foot-5-inch, 330-pound was Oaklands prized free agent addition in the offseason after signing a five-year contract for more than $58 million.Hes a violent football player, Carr said. One of, if not the most, violent football players Ive ever been around, seen, played with, played against, all the above. You love for a guy like that to be protecting you. So, the run game and all that, it helps that but at the same time, I love that hes blocking for me too. It makes me feel safe.Game notes KR/RB Taiwan Jones (concussion) practiced for a second straight day and is questionable.---Online:AP NFL website: http://www.pro32.ap.org and AP NFL coverage on Twitter: http://www.twitter.com/AP-NFLWillie Cauley-Stein Jersey . Booth picked up 65 caps after making her national team debut in 2002 at the age of 17. She most recently played for Sky Blue FC of the National Womens Soccer League. "It just felt like it was my time to move on," she said in a phone interview from her hometown of Burlington, Ont. Jordan Poole Jersey . 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The final mens golf major championship of 2016 tees off just 11 days after the third ended with Open Championship runner-up Phil Mickelson in one of the marquee pairings at next weeks 98th PGA Championship.Mickelson, who won the 2005 PGA at ?Baltusrols Lower Course, the venue again this year, will be playing alongside defending champion and world No. 1 Jason Day, as well as 2012 and 2014 PGA Champ Rory McIlroy. The trio gets underway at 8:30 a.m. ET on Thursday.Other notable Thursday/Friday groupings include Ernie Els, Zach Johnson and Rickie Fowler (7:40 a.m. ET) and Jordan Spieth, Bubba Watson and Sergiio Garcia (1:25 p.ddddddddddddm. ET.) 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