quarterback mi sed practice on Thursday and as he deals with a right elbow injury to the ulnar collateral ligament and related nerves. He's Jonathan Marchessault Men Jersey listed as questionable for Week 10, and veteran backup would start on Sunday against the if he's unable to go.There's no replacing Allen if he mi ses any stretch of time. He's been the MVP favorite for most of the season and epitomizes the phrase "one man band" better than anyone else in the league right now. He leads the Bills in rushing and has racked up the fifth-most total yards (pa sing and rushing) by any player through eight games since the 1970 AFL-NFL merger. He's accounted for 23 of the Bills' 25 touchdowns this season, the highest rate (92%) in the NFL.Below is a look at the most total yards (pa s and rush) through eight games -- since 1970.Player (Season)Total Yards (Pa s + Rush) (2013)2,893Andrew Luck (2014)2,855 (2021)2,809 (2020)2,806Josh Allen (2022)2,795Bills head coach Sean McDermott has seen the best and worst of backup quarterback situations, and thankfully Case Keenum is a little more Jeff Garcia and a lot le s . When Donovan McNabb got hurt in 2006 with McDermott as the ' defensive coordinator, Garcia took over and Philadelphia won their final five games to make the playoffs. A little bit different than 2017, when Peterman threw five first-half picks in his first career start. A year later, when Allen mi sed the only five games of his career, Buffalo started three different quarterbacks (Peterman, , ) and went 1-4.There's reason for Bills Mafia to have confidence Keenum could keep the seat warm for Allen. This would be the best supporting cast Keenum has played with since 2017 with the Vikings, when Minnesota had capable wide receivers and the No. 1 scoring defense, just like this Buffalo team. Keenum went 11-3 that season, finished seventh in Jaycob Megna Jersey pa ser rating and helped lead Minnesota to the NFC Championship. He can hold down the fort, but he can't be remotely close to Josh Allen.Here are the three biggest changes you can expect:Don't expect a reenactment of the Minneapolis Miracle, even if Keenum would be reuniting with and facing his former team. Keenum didn't have a single completion 20-plus yards downfield in two starts with the last season. This underthrown ball to an open . on a double move showcases his limitations:Allen is 14 of 24 for 618 yards and six touchdowns on throws 25-plus yards downfield this season -- all the best marks in the league. He can make throws that only a small handful of people in the world can make, like the seed he threw in the smallest of windows to for the game-winning touchdown against Kansas City earlier this year.Keenum should be serviceable in the intermediate pa sing game. He ranks above the league average in completion percentage on throws 11-20 yards downfield since 2017, and below average on the short and deep throws.Completion percentage by throw distance (since 2017)KeenumLeague averageLe s than 10 air yards70%71%11-20 air yards61%55%21+ air yards32%35%This touchdown pa s to last year is a good example of play design that works for Keenum -- play action with a deep James Neal Women Jersey cro ser that he hits in stride for a score:The Bills might mi s Allen most on third down. Buffalo leads the NFL in third-down conversion rate (52%) this year, and has the third-best rate on third-and-long (38%).We know Keenum won't be running over defenders on crucial downs like Allen, who is tied for second on third-down conversions on the ground this season. Allen has also embraced the gunslinger mentality on third down, where he has the longest average pa s length in those situations this season (minimum 50 attempts).Allen has a 127.0 pa ser rating Reilly Smith Men Jersey on third-down pa ses to the first-down marker this season. Keenum has a 66.0 rating in those situations since 2017, one of the worst marks in the NFL.That could mean more action for Bills punter . Buffalo has 15 punts this year, fewest in the NFL, a stat I'm sure they use like a badge of honor. Buffalo won't be able to rely on Allen's improvisational skills to make big plays either. Allen leads the NFL with 9.0 yards per attempt when pre sured this season. He has a better pa ser rating when pre sured (96.0) than does on all plays (90.5).His deep ball on the run to Diggs in Week 1 is one throw Keenum doesn't have in the arsenal:One thing Keenum will have at his disposal is the aforementioned Diggs. Keenum actually has similar numbers throwing to Diggs in his career as Allen. And Keenum was throwing to Diggs before he emerged as a superstar and was the No. 2 option to in Minnesota.Targeting Diggs in careerAllenKeenumCompletion percentage70%68%Yards per attempt8.89.0Pa ser rating109.2115.0It'd be easy to a sume Buffalo will go to the ground game more without Allen, but I'm not so sure. The Bills have one of the worst run-blocking units in football and they rank fourth-worst in Rush EPA this year. The Bills throw at one of the highest rates in the league and sometimes a check-down pa s is like a run. That's why Colin Miller Men Jersey Buffalo traded for pa s-catching back , who could stand to get more involved. Either way, let's hope Allen can play through an injury that could threaten an MVP campaign and Super Bowl run. Football wouldn't be as fun without him.