The global black cloud that is the COVID-19 pandemic has few silver linings. Famed bowling coach Mark Baker found one out of necessity. The pandemic shut down bowling centers — and therefore bowling lessons — across the country in mid-March, putting Baker out of work with about 100 lessons canceled in what traditionally is his strongest month. California opened for a short period after Memorial Day, shutting down again as COVID-19 cases spiked, and almost all bowling centers in...