In recent years, instant replay has forever changed the rules of sports across the world. In the United States, Major League Baseball has been one of the most reluctant professional sports leagues to accept instant replay. Until last year, officials could only use instant replay to review the validity of a home run call. In 2013, team owners approved a significant expansion of instant replay rules for the 2014 season.

2. In recent years, instant replay has forever
changed the rules of sports across the world. In
the United States, Major League Baseball has
been one of the most reluctant professional
sports leagues to accept instant replay. Until
last year, officials could only use instant replay
to review the validity of a home run call. In
2013, team owners approved a significant
expansion of instant replay rules for the 2014
season.

3. According to the new rule changes, managers can
challenge one call per game. If the first challenge
overturns a call, a manager can make a second
challenge. Under the new rule system, managers
can challenge calls such as ground-rule doubles,
tag plays on base paths, force plays at all bases,
and fan interference. Most notably, managers
cannot challenge judgment calls, such as balls and
strikes, checked swings, and the infield fly rule.
The first instant replay challenge occurred on
March 31, 2014, when Chicago Cubs manager Rick
Renteria challenged a double-play call.