2020 Angels spring training preview: starting rotation

As the Angels head toward the first workout of spring training on Feb. 12, we are providing a breakdown of how they stand with different aspects of their roster. Players acquired this winter include the method of their acquisition in parentheses. Up first, the starting rotation:
2019 RECAP
The Angels endured yet another season in which their rotation was decimated, this time not only by injuries but most notably by the tragic death of Tyler Skaggs. The Angels did not have a single starting pitch