Reconstruct a question, answer pair from this explanation: To answer the question, consider the following: The 2018 Major League Baseball season began on March 29, 2018, and is scheduled to end on September 30.
Q:Context: The 2018 Major League Baseball season began on March 29, 2018, and is scheduled to end on September 30. The Postseason will begin on October 2. The 2018 World Series is set to begin on October 23, and a potential Game 7 is scheduled on October 31.

Question: when does the mlb regular season start in 2018?
A:March 29 , 2018