Semien rejected Toronto's $18.4 million qualifying offer Monday, Shi Davidi of Sportsnet.ca reports.
As expected, the shortstop will test the open market coming off the most impressive season of his MLB career. He smashed a career-high 45 home runs and also set career bests in RBI (102) and stolen bases (15) in 162 games. Semien is just one of a handful of quality shortstops headed for free agency this offseason, as Carlos Correa, Corey Seager and Trevor Story are also set to test the waters.