0 -- Hits allowed by Bob Feller on April 16, 1940, the only Opening Day no-hitter. Feller walked five and struck out eight as the Cleveland Indians beat the Chicago White Sox 1-0 at Comiskey Park.	Hank Aaron tied Babe Ruth with No. 714 in the 1974 opener. Walter Iooss Jr.
.634 -- Winning percentage on Opening Day by the New York Mets, tops in the modern era. The Mets won nine consecutive openers from 1975-83, a record they share with with the St. Louis Browns, who won nine straight from 1937-45.
3 -- Most home runs by one player in an opener, a record shared by George Bell (1988) and Tuffy Rhodes ('94). Rhodes hit eight homers that year.
4 -- Opening Day starters who have yet to pitch 150 innings in the majors: Florida's Josh Beckett (131 1/3), Detroit's Mike Maroth (128 2/3), Anaheim's John Lackey (108 1/3) and Kansas City's Runelvys Hernandez (74 1/3)
5 -- Most hits in an opener, shared by many, but not accomplished since Nellie Fox of the White Sox on April 10, 1959. The last NL player with five hits on Opening Day was Billy Herman with the Cubs on April 14, 1936.
6 -- Pitchers who have made more than a dozen Opening Day starts: Tom Seaver (16), Walter Johnson (15), Steve Carlton (14), Jack Morris (14), Robin Roberts (13) and Roger Clemens (13, including Monday's assignment).
7 -- Opening Day home runs for Ken Griffey Jr., most among active players. The record is eight, held by Frank Robinson -- three for Cincinnati, three for Baltimore, one for California, and one for Cleveland. Babe Ruth, Willie Mays, Eddie Mathews and Carl Yastrzemski also hit seven apiece.
8 -- Number of first pitches thrown out by Franklin Roosevelt, more than any other U.S. president. William Howard Taft began the tradition in 1910 and every sitting president except Jimmy Carter has done it since then.
10 -- Total bases for Gee Walker on April 20, 1937, the only man to hit for the cycle on Opening Day. Walker did it in reverse order (home run, triple, double, single) to lead the Tigers past the Indians 4-3.
12 -- Largest margin of victory in an Opening Day shutout. The Brewers blanked the Orioles 12-0 on April 4, 1988.
18 -- Different Opening Day third basemen for the Chicago Cubs since the departure of Ron Santo after the 1973 season.
33 -- Players on Opening Day rosters born in the 80s, including five members of the Detroit Tigers: RHP Matt Roney (1/10/1980), RHP Franklyn German (1/20/80), LHP Wil Ledezma (1/21/81), SS Omar Infante (12/26/81) and RHP Jeremy Bonderman (10/28/1982).
21 -- Most runs scored by a team on Opening Day, by Cleveland in a 21-14 win over the St. Louis Browns on April 14, 1925.
25 -- Grand slams hit on Opening Day. Baltimore's Tony Batista became the 24th player to do it last season. The only player to hit grand slams in two different openers was Sixto Lezcano (1980, '82).
38 -- Age of Walter Johnson in 1926 when he threw a 15-inning shutout against the A's for his record sixth Opening Day shutout.
47 -- Age of Jack Quinn when he to started for the Brooklyn Dodgers on Opening Day in 1931. Charlie Hough was 46 when he took the hill for the Florida Marlins in 1994.
54 -- Opening Days in uniform for Don Zimmer, 71, who began his professional baseball career in the middle of the 1949 season.
714 -- Career home runs for Hank Aaron after his three-run blast on April 4, 1974, which tied Babe Ruth's all-time record. Commissioner Bowie Kuhn ordered the Atlanta Braves to put Aaron in the lineup after they had considered holding him out until their home opener.