With Raymond Sanders out between two and three weeks after undergoing arthroscopic surgery to repair torn cartilage in his right knee, UK is left searching for a replacement for the sophomore running back. Fortunately, Kentucky is coming off a fall camp that saw a stable of six backs intensely compete for playing time.Through two games, only Raymond Sanders and freshman Josh Clemons have seen action, but the other four will have ample opportunity to play this weekend. UK figures to play at least two in the backfield through the course of Saturday’s game and likely more.With that in mind, let’s take a look at how UK will fill the temporary void left by Sanders’ injury.Freshman Josh Clemons – Joker Phillips said today that Clemons will step in as UK’s starter. Two games into his first season at UK, the Georgia native leads the team in rushing with 165 yards on just 25 carries. He has scored a pair of touchdowns, including an 87-yard burst in Saturday’s win over Central Michigan that left the Commonwealth crowd buzzing and put the Wildcats in the lead for good.Clemons will be making his first start, but he has already established himself as a reliable runner. His 5-foot-10, 201-pound frame gives him a blend of power and speed that make him dangerous on every play. There are few concerns about a drop-off in the running game with Clemons, but his abilities as a blocker and receiver are somewhat more unknown. He does not yet have a catch in his career (Sanders had 16 in his freshman season in backup duty). Clemons has the frame to be an excellent pass protector, but knowledge of assignments is always a concern for a freshmen.Redshirt sophomore Jonathan George – According to Phillips, George is slated to be the primary backup. Like Clemons, he has good size at 5-foot-10, 209 pounds to go with speed that won him state titles in the 200- and 400-meter dash in high school. George came to UK from Lincoln, Ala., and had nine carries for 25 yards as a redshirt freshman. UK fans have not seen much of him so far, but the UK-UofL rivalry has been full of plenty of surprise heroes over the years. What could be a better time for George to introduce himself than against UK’s in-state rival?Freshman Marcus Caffey – Caffey came to UK from Atlanta, Ga., as a highly touted recruit, ranking in the top 40 running backs nationally. At 5-foot-11, 189 pounds, he was expected to compete for playing time right away, but injuries hampered his fall camp. He is healthy now though and is competing for carries this week. He was praised in high school for his vision and balance.Redshirt freshman Brandon Gainer – Gainer is the kind of back that first-year running backs coach Steve Pardue likes. He has the ability to run powerfully between the tackles and will fight for the extra yard. A surprise signee on National Signing Day in 2010, the four-star prospect according to ESPN.com has the ability to break tackles and the willingness to pass protect. The year he spent at UK as a redshirt also gives him a familiarity with the offense that his fellow freshmen lack.Redshirt junior CoShik Williams – The most experienced runner on the UK roster, Williams carried the ball 38 times in his first two years on campus for 186 yards. Over half of those yards came in 2010 against Charleston Southern when he rushed for 95 yards and three touchdowns. At 5-foot-nine, 178 pounds, he is the smallest of UK’s backs, but still has the ability to break tackles. An injury like this one to Sanders is the very reason why Phillips and his staff have worked so tirelessly to build depth on the UK roster. Sanders will certainly be missed but, as Phillips said today, “the game doesn’t stop.”