Forget Dr. Delano Meriwether, the iconic sprinting medical doc of the early 1970s. My favorite fast physician is Dr. Allan Tissenbaum of Pittsburgh, whose up-and-down (via injury) career I’ve followed for decades. At the recent Torun world indoor meet, Dr. T took M60 60 gold in 7.71 seconds. (I’m predicting he’ll win the M100 100 outdoor title in four decades.) That is, if he can heal up from his myriad injuries. In Poland, he attempted only the short dash, saying he was dealing with “nerve upper extremity stuff.” No matter. His heart and mind were all right. Upon his return…