Silver is pretty powerful and has fought bigshots like Sonic and Shadow in the past! Of course Grimmjow was able to fight Ichigo! His speed is easily off the charts and he could even give guys like Sonic and Shadow a run for their money! Silver and Grimmjow both have super forms, but in the end Grimmjow has his Ceros. Grimmjow wins.

Fanfic version below

Fight time!