Complex sentence: In late 1962, Paciorek attended an instructional league put on by Houston, and followed that up by being part of the team's spring training roster, where he "hit everything in sight", and finished exhibition play with a batting average of over.300.
Split into simpler sentences: In late 1962, Paciorek attended an instructional league put on by Houston, which led to him becoming part of the team's spring training roster. Curing exhibition play, he "hit everything in sight", and had a batting average of over.300.