The will be without their top running back for at least another week.On Monday, Colts head coach Frank Reich announced that running back will mi s Sunday's game against the . Mack sustained a hand injury during the Colts' Week 11 win over the that required surgery. With Mack out, the Colts Mark Melancon Jersey will continue to rely on , who rushed for 104 yards and a touchdown in last Thursday's lo s to the . On Sunday, the Colts' offense will face a Mike Soroka Jersey Titans' defense that is 13th in the in fewest rushing yards allowed and eighth in yards per carry allowed.Mack, a fourth-round pick in the 2017 draft, has rushed for 862 yards and four touchdowns this season while averaging 4.5 yards per carry. He's posted three 100-yard rushing performances this season that included a season-high 174 yards in the Colts' Week 1 lo s to the .Despite the lo s of Mack, the Colts still boast the league's third-best rushing attack behind Fred McGriff Jersey the strength of an offensive line that includes center , tackle and guards , and . The line has also helped quarterback complete nearly 65 percent of his pa ses this season with 15 touchdowns and four interceptions.While they have had succe s on both sides of the ball, injuries to Mack, Bri sett and receiver T.Y. Hilton have contributed to the Colts' recent slide, Robbie Erlin Jersey as Indianapolis is now 6-5 after a 5-2 start. The Colts' last three lo ses have been by a combined nine points that include a two-point lo s in Pittsburgh, a four-point lo s at home to the and last Thursday night's three-point lo s in Houston. Despite their recent skid, the Colts are just a game behind the Texans for first Max Fried Jersey place in the AFC South division. Sunday's game against the Titans will be their second-to-last home game of the regular season, as the Colts will travel to Tampa Bay and New Orleans before hosting the in Week 16. Indianapolis will close out the regular season with a home game against the Jaguars.