I saw that he’s the type who smiles when he’s happy or nervous, and you can’t tell which. It reminded me of someone, but I couldn’t think who.

I told Baghdatis that he played a little like me, and he said it was no accident. He grew up with pictures of me on his bedroom wall, patterned his game after mine. In other words, tonight I’ll be playing my mirror image. He’ll play from the back of the court, take the ball early, swing for the fences, just like me. It’s going to be toe-to-toe tennis, each of us trying to impose our will, each of us looking for chances to smoke a backhand up the line. He doesn’t have an overwhelming serve, nor do I, which means long points, long rallies, lots of energy and time expended. I brace myself for flurries, combinations, a tennis of attrition, the most brutal form of the sport.

Of course the one stark difference between me and Baghdatis is physical. We have different bodies. He has my former body. He’s nimble, fast, spry. I’ll have to beat the younger version of myself if I am to keep the older version going. I close my eyes and say: Control what you can control.

I say it again, aloud. Saying it aloud makes me feel brave.

I shut off the water and stand, shivering. How much easier it is to be brave under a stream of piping hot water. I remind myself, however, that hot-water bravery isn’t true bravery. What you feel doesn’t matter in the end; it’s what you do that makes you brave.

STEFANIE AND THE KIDS RETURN. Time to make the Gil Water.

I sweat a lot, more than most players, so I need to begin hydrating many hours before a match. I down quarts of a magic elixir invented for me by Gil, my trainer for the last seventeen years. Gil Water is a blend of carbs, electrolytes, salt, vitamins, and a few other ingredients Gil keeps a closely guarded secret. (He’s been tinkering with his recipe for two decades.) He usually starts force-feeding me Gil Water the night before a match, and keeps forcing me right up to match time. Then I sip it as the match wears on. At different stages I sip different ver-sions, each a different color. Pink for energy, red for recovery, brown for replenishment.