I found that even after I go to the net half the time I ended up hitting my shot into the net. You have to be perfect with positioning and if you're moving forward you need to not do it until they've hit their shot else you'll get passed.
That's actually how I always play, but it isn't working with Lendl. Closest I got was a 6-3 3-6 6-7 4-6 loss
You'll get him eventually! Try staying back until you've got a really good chance to put him away going forward. If you're staying back it's good practice for the later matches where positioning is even more important.
just beat cash in a fourth setter (my first match).
the third set was the deal breaker. i came back from a 0-3 deficit to take the set in an epic tiebreak 7-5. after that cash lost the momentum and i took the opportunity to break in the first game of the fourth set. from there on i just maintained my serve and it was a done deal.