had the answers. I turned to Twitter (Twitter, San Francisco, California) discussions, where ST-segment elevation myocardial infarction protocols developed by doctors in China started circulating. Upon first glance, they seemed thrombolytic heavy. But only weeks later, after the cases in the United States had swelled to \>600,000, with \>25,000 deaths ([@bib4]), we recognized the rationale. Our new hospital ST-segment elevation myocardial infarction policy, which would normally require approval from multiple layers of bureaucracy, now came down to my "expert" opinion. I had to lean on the experience of doctors who did not even speak the same language as me, who quickly became colleagues through American College of Cardiology webinars ([@bib5]).

My medical school and residency classes, who had not communicated as a group since our graduations years ago, startedthree-set win over Andy Murray clearly demonstrated just how calm, in control, and dangerous Federer is — and could be on Sunday. His service statistics, the power with which he’s connecting with his backhand (the weaker side) also indicates the seriousness of his intentions.

Nothing will come easy, though, so expect a battle from the two.

Prediction: Federer in four sets

JEFF

Federer was at his vintage best in the semifinal against Murray, where the latter was simply outclassed. Djokovic had a scare in the round of 16, losing two tiebreaks to the big serving Kevin Anderson, but has gotten through some tricky opponents without playing his best.

Although the top seed has a somewhat dubious reputation in major finals, I remain unconvinced that Federer will be able to replicate his semifinal form