Reading are assessing Noel Hunt (foot), Mikele Leigertwood (calf) and defender Matt Mills (groin).Andy Griffin is hoping to return to the starting line-up after recovering from an Achilles injury. [LNB]Preston boss Phil Brown could again be without striker Chris Brown and defender Sean St Ledger. [LNB]Both men are nursing injuries which forced them to miss the match against Swansea and face fitness tests ahead of Tuesday's game. [LNB][LNB] MATCH PREVIEW Reading climbed into the play-off zone with a victory on Saturday, while Preston climbed off the bottom of the table for the first time since November to keep alive their chances of somehow avoiding the drop. [LNB]North End's 2-1 defeat of Swansea was their third consecutive victory and another maximum on Tuesday would narrow the gap between them and fourth-bottom Crystal Palace to five points. It would also be their first win at the Madejski Stadium. Their last away triumph against Reading was at Elm Park in 1982. [LNB]The Royals are enjoying their best form of the season. They have won four matches in a row, are unbeaten in eight, and have kept clean sheets in their last two games. [LNB]Beating Preston would take them three points clear of seventh-placed Nottingham Forest and would be the perfect early birthday present for manager Brian McDermott, who turns 50 on Friday. [LNB][LNB] MATCH FACTS Head-to-head[LNB]• Reading and Preston have both won 18 of the 47 previous matches between these clubs. [LNB]• The Royals have won four and lost only one of their last seven league games against North End. [LNB]Reading[LNB]• A draw would be Reading's 200th in the second tier. [LNB]• Ivar Ingimarsson is in line for his 250th league appearance for the club, and Jimmy Kebe his 100th league start. [LNB]Preston[LNB]• A win for Preston would see them register a fourth consecutive league victory for the first time since the end of the 2008/09 Championship season. [LNB]• North End have won three, drawn six and lost six of their matches since the appointment of Phil Brown as manager. [LNB]• Preston have managed only one away win this season against a team outside of the current bottom eight (Leeds). [LNB]• Defender Billy Jones is set to make his 150th league start for the club.