Yep. His best chance to take a big clay title had to be Monte Carlo 1995 against Thomas Muster.
Becker had a 2 set to love lead, but in those days Masters finals were best of 5 sets. It was on his racquet in the 4th set tiebreak. He had two match points at 6-4, double faulted, and Muster went on to take the rest to win the tiebreak 8-6, and Becker was crushed, getting bageled in the deciding 5th set.
Here is the full match...
Respectfully,
masterclass