SANTA CLARA, Calif. -- On Monday, NFL agent Drew Rosenhaus appeared at the San Francisco 49ers second training camp practice. Afterward, he and client NaVorro Bowman, the teams star linebacker, were seen walking upstairs to the offices that rise above the practice fields.By Wednesday night, Bowman and the 49ers had agreed to a four-year contract extension, which will be added to the three years Bowman had remaining on his previous contract. Sources told ESPN NFL Insider Adam Schefter that the four-year extension is worth $44 million, including $20 million guaranteed.Bowmans new-look pact takes him through the 2022 season and solidifies his standing as a franchise centerpiece for coach Chip Kelly and general manager Trent Baalke.At 28, Bowman is coming off a bounce-back 2015 season in which he overcame a devastating knee injury, which cost him the entire 2014 season, and earned his fourth first-team All-Pro honors. By his own admission, Bowman wasnt at full strength in 2015, but he managed to lead the NFL in tackles, with 154 to go with 2.5 sacks and a forced fumble.Entering this season, Bowman made it clear that he feels stronger and ready to prove he has plenty of good football ahead of him.Im not too worried about the knee, Bowman said. The knee feels great, but Im still staying on it so that anything that comes up that would hold me back wont come up.Im just excited to have another year to go out and improve on the year that I had last year, just to prove the doubters wrong and get back to the level that I was at and get the respect that I deserve.Given the three years left on Bowmans contract, this deal is a rarity, but the 49ers have been adamant about wanting to spend some of their nearly $50 million in cap space to retain some of their key pieces. Bowman obviously fits that description.In 2012, the 49ers signed Bowman to a contract extension that was set to take him through the 2018 season. He had three years and $23.55 million remaining on that deal.Although the 49ers are only three practices into this years camp, defensive coordinator Jim ONeil said he can already see a little extra bounce in Bowmans step. That Bowman serves as one of the primary leaders on a young team only makes his continued presence more valuable.I thought last year, towards the end of the year, he was kind of back to what he was pre-injury, ONeil said. But NaVorros been great. I think hes really started to step into that leadership role, and theres a lot of guys in the NFL who are lead-by-example guys. I think NaVorro has kind of taken that next step, and hes a follow-me-or-else guy, which are the kind of leaders you need to have to have a great unit in this league.With a new deal in place, the 49ers could have their leader around for seven more seasons. Michael Strahan Giants Jersey . Blackwood, 28, has played the last three seasons in the San Diego Padres system, including the past two summers with Class AA San Antonio of the Texas League. Michael Strahan Jersey . Duchene scored two goals and had an assist, helping the Colorado Avalanche beat the Carolina Hurricanes 4-2 on Friday night to match the best 10-game start in team history. http://www.authenticnygiantspro.com/Julian-love-giants-jersey/ . Peter Holland and Brad Staubitz were sent to Toronto on Saturday as the Maple Leafs traded defenceman Jesse Blacker and draft picks to the Anaheim Ducks. Phil Simms Giants Jersey . With their top three point guards and Kobe Bryant all sidelined by injury, the Lakers signed Marshall out of the D-League on Friday before their home game against Minnesota. Mark Bavaro Youth Jersey .Y. -- Paul Byron and Matt Stajan scored as the Calgary Flames started a five-game road trip with a 2-1 overtime win over the Buffalo Sabres on Saturday afternoon. PHILADELPHIA -- The Phillies have scratched right-hander Aaron Nola from his scheduled start Wednesday night and placed him on the 15-day disabled list with a strained elbow.Right-hander Phil Klein, who is 0-1 with a 5.19 ERA in eight relief appearances for the Texas Rangers this season, will instead start against the San Francisco Giants.Nola (6-9, 4.78), 23, said he felt discomfort after his most recent start in Atlanta on Thursday, but that he really didnt think it was anything.He has struggled over the last two monnths, posting a 9.dddddddddddd82 ERA in his last eight starts. The Phillies skipped him once in the rotation before the All-Star break, but Nola said his struggles have had nothing to do with his health.Klein is 2-3 with a 4.80 ERA in 36 career games. The Phillies claimed him from Texas on June 19. He was 1-1 with a 2.13 ERA in eight games with Triple-A Lehigh Valley before being called up. ' ' '