Which Cubs second baseman, nicknamed "Ryno," won the 1984 NL MVP?

Which Mets outfielder was nicknamed "Straw"? Which Mets batter's ground ball went through Bill Buckner's legs in the 1986 World Series? Which Mets first baseman, now a broadcaster, was featured in a famous 'Seinfeld' episode? Which Cubs broadcaster and former third baseman had his No. 10 retired by the team? Which Expos and Cubs outfielder, nicknamed "The Hawk," won the 1987 NL MVP? Which Mariners outfielder won both AL MVP and Rookie of the Year in 2001? Which Red Sox outfielder was the first to win MVP and Rookie of the Year in the same season, in 1975? Which Blue Jays slugger won the 2015 AL MVP?