At The Sports Quotient, Xavier covered the Los Angeles Dodgers, but now only contributes a weekly column. His articles have examined Max Scherzer's dominance in the first half of 2015, Dallas Keuchel's pitch sequencing, and payroll mismanagement by the Seattle Mariners.
Xavier also writes for Baseball Prospectus. His bi-monthly articles focus on the Milwaukee Brewers. He has written about Jimmy Nelson's struggles on the mound, Jean Segura's adjustments at the plate, and the perceived value of Mike Fiers before he was traded.