Complex sentence: In the third inning, the Cubs loaded the bases on a walk and two singles off of Tomlin, who was relieved by Dan Otero and Russell hit a grand slam to extend the Cubs lead to 7--0.
Split into simpler sentences: In the third inning, the Cubs loaded the bases on a walk and two singles off Tomlin, who was relieved by Dan Otero. Following the pitching change, Russell hit a grand slam to extend the Cubs lead to 7--0.