Having gone 5 years without a win and suffered her fair share of bad breaks and tough losses, Diana Zavjalova has every excuse to be grumpy and sullen when competing on the PWBA Tour. Instead, Zavjalova bowls with the attitude of someone delighting in a winning streak, seemingly enjoying every minute of competing, smiling and laughing when the breaks go her way, and gesturing to and bantering with friends and fans. On Thursday night in the stepladder finals of the 2023 PWBA Waterloo Open, it...