It is over 20, but he was dribbled 4 times, so "nothing got past him" is an exaggeration.
5 tackles, 2 interceptions, 7 clearances, 9 blocks. The 9 blocks is what is most impressive in this particular match, not his tackling.
3 blocked shots, 4 blocked crosses and 2 blocked passes.
It's as though, because he was dribbled 3 times in the first half, I think all by Sterling, he decided to activate beast mode for the rest of the game.
His passing was awful though, I wish he would improve that side of his game.