Complex sentence: In football the bulldogs are always competitive since they are extremely well coached by long time 20 plus year head Coach Dave Silvera (who recently had a stroke, but is fine and expected to continue coaching the bulldogs).
Split into simpler sentences: In football the bulldogs are always competitive in large part due to the fact that they are extremely well coached by Coach Silvera. Long time 20 plus year head Coach Dave Silvera (who recently had a stroke, but is fine and expected to continue coaching the bulldogs).