It's always personal between these Manchester rivals. Just ask Carlos Tevez. The Argentinian felt undervalued by Ferguson at United but he has been the high-octane inspiration behind City's push for a top-four finish, as recognised by his nomination for PFA Player of the Year.The favourite for that award is Wayne Rooney, whose 26 league goals and overall performances as a one-man wrecking ball give United reason to argue that Tevez has not been missed at Old Trafford. Except, that is, when Rooney has been injured.United's failure to win in their last two games has coincided with the England forward's absence. Should United lose further ground to leaders Chelsea on Saturday, a record 19th league title will surely have to wait for at least another year.Martin was speaking publicly for the first time since Hendrick Motorsports this week signed Kasey Kahne as his replacement in the No 5 Chevrolet after next season He ended any speculation that he planned to abandon his Hendrick seat early, or quit driving when he does get out of that car at the end of the 2011 season.