Good news is that he lacks any kind of speed advantage to flank, let alone angle in. He's betting all that money on that wedge, when in reality it's not gonna work too well for him. Learn from my past mistake and don't make the farther parts of your wedge the only part truly touching the floor :V. Only the side bits that aren't even wedge are what will be the most effective, which is a shame. I suspect it will wheely actually, contrary to popular belief. And that mystery srimech looks about as reliable as a Fiat 500.
Rush at the start, to possibly cause him to wheely. Exploit his small wheelbase by attacking the very middle of the robot. My forks are more than reliable enough to get under 90% of the time. And that other 10%? Monster truck him (this tactic was sponsored by the enormous wheels gang), and smack him on the booty with the blade. Try striking the sides of his far-in-front wedge if he attempts to angle in, but attempt to focus on that front middle wedge unless tactics are working better on the sides wedges. Did he get knocked upwards from a hit? Punish by charging forward and combo the hit into an even larger hit. Self right by hitting his wedge and using it as a kickstand.
Keep the pressure on him. Ruin his day. Combo hits together until I can create some serious damage to that wedge all while disrupting his self righting.