Complex sentence: After finishing the year with the Mariners he signed a contract to play for the Milwaukee Brewers; but during spring training he tripped in a hole while running down the first base line and sustained injuries to his right leg.
Split into simpler sentences: After finishing the year with the Mariners he signed a contract to play for the Milwaukee Brewers. In spring training, Fosse tripped in a hole while running down the first base line and suffered injuries to his right leg.