Complex sentence: Pirates'manager Fred Clarke also had input into the stadium's design, giving groundskeepers advice on the field, in addition to designing and patenting a device to spread and remove a canvas tarp over the infield in case of rain.
Split into simpler sentences: Pirates'manager Fred Clarke also had input into the stadium's design. Clarke gave groundskeepers advice on the field, in addition to designing and patenting a device to spread and remove a canvas tarp over the infield in case of rain.