I couldn't track down the original thread, but Mookie Betts' game-changing marathon that took JA Happ deep meets the criteria:
A real contest: a lengthy at-bat featuring great pitching against hitting that's either not quite so good -- or that much better. The pitches aren't quite good enough to get the batter out, and the batter keeps making contact, until BOOM
Some of the pitches may be missing from this chart, but give it a few days, and they'll show up.
A real contest: a lengthy at-bat featuring great pitching against hitting that's either not quite so good -- or that much better. The pitches aren't quite good enough to get the batter out, and the batter keeps making contact, until BOOM

Some of the pitches may be missing from this chart, but give it a few days, and they'll show up.