NASHVILLE Kaleb McGary Jersey , Tenn. (AP)The only question about Tom Brady as quarterback in New England is when Father Time finally wins before the five-time Super Bowl champ decides he’s done with the NFL.Same for Drew Brees in New Orleans or Philip Rivers with the Chargers.Aaron Rodgers is expected back at his usual level returning from injury for Green Bay, and Deshaun Watson tantalized before his own injury cut short a very promising rookie season. Even though it’s been a while since Andrew Luck threw a pass in an NFL game, his resume gives him plenty of cushion as he recovers from shoulder surgery.Not every quarterback has the same grip on a starting job as Brady, Brees or Rodgers, and a poor game or sloppy start can lead to a spot on the bench. Add a promising rookie into the mix, the leash can be even shorter.Here’s a look at some quarterbacks who need to play well to remain starters as training camps open around the league:JAMEIS WINSTON, BUCCANEERSYes, Marcus Mariota must prove he can play all 16 games in a season, but the Tennessee Titans already have picked up Mariota’s fifth-year option for 2019. Same for Tampa Bay for Jameis Winston, the quarterback taken a spot ahead of Mariota in 2015. Both are due $20.9 million in 2019 at what could be a bargain the way the market is booming for quarterbacks.On the other hand, Winston will miss the first three games this season with the quarterback suspended for violating the NFL’s personal conduct policy after a league investigation of an accusation that the 2013 Heisman Trophy winner groped a female Uber driver during a ride in Arizona in March 2016. That’s not a great combination when Bucs coach Dirk Koetter’s job security already is at risk after a 5-11 record last season. Tampa Bay brought back veteran Ryan Fitzpatrick, who started three games in Winston’s place last season, for an experienced backup.JIMMY GAROPPOLO Kendall Sheffield Jersey , 49ERSJimmy G could do no wrong for the 49ers last season, winning five straight games after finally moving into the starting lineup. San Francisco wasted little time signing the young quarterback to a five-year contract worth $137.5 million at an average of $27.5 million per season. The 49ers also re-signed receiver Marquise Goodwin to keep a top target around.As good as Garoppolo looked, there’s now plenty of game tape of him running coach Kyle Shanahan’s offense. Defensive coordinators, especially those in the NFC West, have had all offseason to figure out how to slow down Garoppolo.TYROD TAYLOR, BROWNSHelping the Bills stop a seemingly endless playoff drought wasn’t enough to keep Taylor on the job in Buffalo. The Cleveland Browns traded for Taylor on the eve of free agency, and that’s normally a sure sign a team is heavily invested in a player. Then the Browns went quarterback with the No. 1 overall pick in the draft, selecting Baker Mayfield. Keeping Mayfield on the bench depends mostly on how long Taylor plays well.JOE FLACCO, RAVENSThe 10-year veteran has missed a mere six games since being drafted by Baltimore in 2008, all in 2015, and led the Ravens to a Super Bowl in 2012. But the Ravens last reached the playoffs in 2014, and general manager Ozzie Newsome made sure to give himself options in his final year in charge. Not Robert Griffin III, who last started a game in 2016 with Cleveland.Newsome traded to get the final pick of the first round in April to select Lamar Jackson . Yes John Cominsky Jersey , the Ravens insist they want to develop Jackson and be patient. If Flacco struggles, Jackson, who threw 57 touchdown passes over the past two seasons in college at Louisville and won a Heisman Trophy, could start looking really good much sooner.CASE KEENUM, BRONCOSComing off the bench and leading Minnesota to the NFC championship game is one thing. Playing quarterback under the watchful eye of Hall of Famer John Elway in Denver is quite a different challenge. Keenum comes in as the starter after the best season of his career . He’ll need to pick up where he left off to stop the Broncos‘ quarterback carousel , with backup Paxton Lynch, the 26th pick overall in 2016, sitting on the bench and, thus far, showing little when he has played.PATRICK MAHOMES IIWith Alex Smith traded to Washington , all the pressure now is on Mahomes in Kansas City after he was the target of all those longing looks to the bench by fans during his rookie season. He looked good winning his first NFL start in last year’s regular-season finale . That won’t help with expectations remaining high for the Chiefs, who won the AFC West before blowing a wild-card game to the Titans at Arrowhead Stadium in the playoffs.— GLENDALE, Ariz. — Last year Qadree Ollison Jersey , Jameis Winston came to Arizona and had a very long afternoon.The Tampa Bay Buccaneers (2-2) return to the desert on Sunday, where they will see Adrian Peterson, of all people, glaring at them from the Cardinals’ backfield.Winston threw four interceptions in Arizona last year in Tampa Bay’s 41-7 loss.“Well you see what they did to us last year,” wide receiver Mike Evans said. “They stomped us out last year. They bring a lot of pressure and a lot of man coverage on the back end. We’ve just got to be real physical as receivers and tight ends. We’ve got to be real physical and get open.”Tampa Bay coach Dirk Koetter said that last year the Cardinals “physically beat us and took advantage of all of our mistakes.”The Cardinals expect an improved, confident Winston on Sunday.“He’s matured as a leader, as a captain of that team,” Arizona cornerback Patrick Peterson said. “You can tell that they gave him the keys to the car.”Winston faces an Arizona defense that was carved apart by Carson Wentz in a 34-7 loss at Philadelphia last Sunday.The offense for Arizona (2-3), was equally inept, particularly on the ground, where the Cardinals are averaging a league-worst 2.6 yards per carry.Enter Peterson, the four-time All-Pro running back who was languishing on the sidelines as the third-string running back in New Orleans. Arizona acquired the 32-year-old back this week in exchange for an undisclosed draft choice.Peterson will have had only three practices when he takes the field as the Cardinals’ lead back Sunday.“He’ll have his role,” Arizona coach Bruce Arians said.Peterson said he’s ready to play and insists he still has it despite his unimpressive few games with the Saints.Running the ball with a new team Ed Oliver Jersey , Peterson said, is “pretty much easy.”“I feel like any system is about being on the same page with the offensive line,” he said, “knowing your assignments, knowing the route you have with protections to make sure you keep the quarterback upright. That’s going to be the toughest challenge for me.”Here are some things to consider when the Buccaneers meet the Cardinals:ENERGY BOOST: The acquisition of a player of Peterson’s stature has provided an emotional boost to a team trying to shake off an ugly loss.“Anytime you bring a guy in of that caliber there’s going some kind of excitement,” safety Tyrann Mathieu said. “We haven’t had much excitement the first five games of the season.”STRIVING FOR BALANCE: With RB Doug Martin back on the field, the Buccaneers hope to ease some of the burden on Winston by becoming more balanced on offense.Martin returned from a suspension for violating the NFL policy on performance enhancers last week, averaging 5.7 yards per carry on 13 attempts and scoring one TD during a 19-14 loss to New England.Two years ago, he was the NFL’s second-leading rusher behind, well, Adrian Peterson.“At our core, we’d love to be 50-50 on run downs. Balance is the hardest thing to defend,” Koetter said. “If you’re running the football Cody Ford Jersey , your play-action game opens up. It slows down their pressures. I think every team is like that.”ARIZONA’S DEFENSE: Mathieu said Cardinals defenders still consider themselves among the league’s best despite some ineffective play.“I don’t think it really puts a dent in our armor, who we think we are,” he said. “I think we’ll be all right.”Winston is very familiar with what Arizona does.“I think it all starts with their rush. They’ve got some good guys up front,” he said. “They get a good rush on you. Patrick Peterson (is) arguably one of the best corners in the league and (Justin) Bethel, he is a great corner, too, but I think we match up well with those guys.”THIRD DOWNS: Arizona has been awful on third-down defense and it was especially bad against the Eagles.Philadelphia was 9 of 14 on third-down opportunities, including Wentz’s 79-yard touchdown pass on third-and-19.TOYS: With Martin back, Winston has a wide array of options when he passes the ball, including Evans and his fellow wide receiver DeSean Jackson, and tight end Cameron Brate.“Our hands are definitely full,” Patrick Peterson said. “Jameis has a lot of toys to play with.”