“In a phone interview with The Athletic this week, Christensen said Lance’s biggest breakthrough came when he stood behind his most famous client, Chiefs quarterback Patrick Mahomes, and watched him throw.....Asked if Lance has had any soreness issues since the 49ers offseason program began in mid-April, Christensen said, “zero.”
The issues with Lance’s throwing motion initially were substantial. Christensen said it usually takes him a day to diagnose what’s wrong with a quarterback’s delivery. With Lance, it took four days. But once he figured out the root cause, there was steady progress. Lance’s accuracy improved, the spin on the ball increased and the delivery time became shorter.