wicket is put down will be safe. Umpiring In both sports, there is one umpire per safe haven, and additional umpire(s) to handle technology replays. In baseball, the umpire nearest the pitcher stands behind the batter, whereas in cricket they stand behind the bowler. Cricket uses the Umpire Decision Review System (DRS for short), while there is Instant replay in Major League Baseball. One major difference is that, ignoring the umpires, DRS can only be invoked by players, while instant replay can only be invoked by the team managers. Game length A direct comparison is difficult since: Cricket is predominantly played in three different formats: Test (and other first-class matches), One Day International (and other List A matches which last 50 overs, i.e. 300 legal deliveries, per innings) and Twenty20 matches (which last 20 overs, i.e. 120 legal deliveries, per innings). Of these, the Twenty20 format takes much the same time as a baseball game: around three to three-and-a-half hours. Baseball games are generally much shorter than Test and One Day cricket games. Most Major League Baseball games last between two-and-a-half and four-and-a-half hours. Because the Major League playing season is 6 months long (183 days, between April and October with spring training in February and March), with 81 games played at home and 81 away (162 in all, not counting the postseason or the All-Star Game), baseball teams often find themselves playing double-headers and series games. A doubleheader entails two games, played back to back, in one day. This usually occurs when a game needed to be rescheduled, and is a common occurrence at the beginning of the Major League season, which coincides with the rainy spring season. Although they were once common, double-headers are rarely scheduled any more by teams, but are part of the culture of baseball, with Ernie Banks' "Let's play two" a famous refrain. A series occurs when two teams play on several consecutive days. This is a part of the regular schedule in baseball because of the number of games required in a season, and because there are large distances between stadiums in the US and Canada, thus conserving time and resources by allowing the teams to spend several days in a single location. In Major League Baseball there is a maximum of 20 days consecutively played before a break in games must be observed. In cricket, test matches and certain domestic first class