There were rumours circulating that the Big Show had suffered a knee injury on the European tour. It was fairly noticeable that on RAW this past week he was wearing a large knee brace that didn't seem usual. Big Show tweeted earlier about these concerns:
@WrestlingInc injury? Nope I'm fine. Thank you though.
— Big Show (@WWETheBigShow) November 11, 2015
He might be having some small issues with his knee but he tells us that he is doing fine! WWE can't really afford another injury right now so this is a positive!