Sir Alex Ferguson's 'big game' selection was predictable earlier in the campaign, but recently we've seen surprise strategies and plenty of rotation in key positions. Manchester United are currently on their best defensive run for years, having not conceded a goal in five Premier League matches, but even that has been achieved with a rotating centre-back partnership.
However, Ferguson's choice of strikers will be most intriguing for Monday night's clash against Manchester City. There, he has a variety of options, and no-one is guaranteed a start. Robin van Persie is out of form, Wayne Rooney has sometimes been omitted in big matches, Danny Welbeck is performing well but struggling for goals, Javier Hernandez's approach might be too simple against a City side that retains the ball frequently, while Shinji Kagawa has become accustomed to life on the bench.
So who will Ferguson pick? First, as long as Rooney is 100%, it would be a surprise if Ferguson left him on the bench; he was excluded from the home clash with Real Madrid because United required a hard-working support striker who could press Xabi Alonso, a task Rooney hasn't always performed effectively in recent years. City don't have anyone in that mould, so expect Rooney to start behind the main striker.
It's not inconceivable that Van Persie could be left on the bench. He hasn't scored in nine matches in a Manchester United shirt, and he hasn't contributed a great deal outside the box, either. Welbeck could be an alternative option, pressing from the front and forcing City to defend deep, allowing Rooney space just behind.
But Van Persie might be reprieved by the poor form of United's wide players. Nani was dreadful at Stamford Bridge last week, Antonio Valencia was used at right-back, while Ashley Young has had an average campaign. Using Welbeck on the flank appears the best option, with Rooney just behind Van Persie.