Marshall yes. I just got canned today on the black side of a marshall vs a 1968 player OTB. Had lots of pressure and he was down to 4 minutes, timer was game in 110 min with 30 sec increment after each move, I had 40 minutes but he got me eventually.
A master told me if some master had the black pieces in my position vs another master, they would have made sweat appear on white's Nuts 🙂
So basically I had a promising positions, just not strong enough to break through and get his king. This will bump me down to 1700 OTB.