Only if you are far more powerful or have the element of surprise.

[He is very strong indeed. He doesn't have the Force but he is built for power; built to match a Jedi. Often it's only a Force push that will disengage him from a good fight. It's a weakness. But this is combat training and Grievous is counting on weapons to be the only tools on display. He attempts to use his size and weight to lean into the clash and force Anakin to relent or move back.]