Leeds manager Simon Grayson will assess the fitness of a number of players ahead of the game at Elland Road.Grayson said there were "one or two bumps and bruises" to contend with after the Boxing Day draw at Leicester. [LNB]Portsmouth will be without Michael Brown, as another appearance by the midfielder will trigger a clause in his contract entitling him to a new deal. [LNB]But Pompey are boosted by the return of Greg Halford, who is available again after serving a suspension. [LNB][LNB] MATCH PREVIEW Leeds United's stay in second place was a short one, with Leicester's fightback from two-down to draw 2-2 against the Yorkshire side seeing them slip down to third. [LNB]But they are unbeaten in 10 matches, and showed during the first hour of the match at Leicester why they have emerged as contenders for what would be a second consecutive promotion. [LNB]Portsmouth looked like contenders for second consecutive relegation earlier this season, but are now a much-improved side. They secured another point on Boxing Day, courtesy of David Nugent's second-half equaliser against Millwall. [LNB]And Leeds' lofty position will not worry Pompey, whose last two away trips ended in victories against high-flying Swansea and Norwich. They will now be looking to complete an impressive hat-trick. [LNB][LNB] MATCH FACTS Head-to-head[LNB]• Portsmouth have won the last four matches between these clubs. [LNB] Have your say on this match • Leeds' last league victory against Pompey was 20 years ago, when they beat them 2-0 at Elland Road. [LNB]Leeds[LNB]• Leeds have won their last three home matches. [LNB]• They have scored or conceded two goals in each of their last four games. [LNB]• United have won their final match of the last two calendar years. [LNB]• Amdy Faye could face his former club. [LNB]Portsmouth[LNB]• Pompey have lost their final match of the last four calendar years. [LNB]• Greg Halford has scored in their last two away games.