The Blue Jays optioned Estrada to Triple-A Buffalo on Saturday.
Estrada will finish the Grapefruit League with a 4.76 ERA and 1.32 WHIP through 11.1 innings. Those numbers are improvements from the 5.73 ERA and 1.45 WHIP he posted in 97.1 Triple-A frames last year, but the Blue Jays will send him back to the minors to continue developing.