Seedlings seem healthy and had almost 100 percent germination rate

This tomato went from about a foot high to about four feet high nearly overnight after a thunderstorm. I had to run and find a tall stake to secure it fast! It hasn't set any fruit yet, but when it starts I expect it to be a strong performer, especially the way it hasn't even blinked in this ridiculous heat wave we have had. The leaves are large, rich and green and the stem is very thick. It very much grows like a beefsteak and I can't wait to taste it. Needs pruning or it will take over and crowd out anything around it.