Lionel Messi was subbed off in the 28th minute of Barcelona's 2-0 win over Almeria in a La Liga match on Saturday following an injury.
Goal's Thomas Floyd reported that Xavi came on to replace the star forward after he looked to have picked up a knock:
Messi tweaks something, so he's lifted midway through the first half and replaced by ... Xavi. #FCB— Thomas Floyd (@thomasfloyd10) September 28, 2013
He will miss at least two weeks of action.