Short answers, pulled from the story.
Olajuwon retired as the NBA's all-time leader in blocked shots with 3,830. He is the only player in NBA history to record more than 200 blocks and 200 steals in the same season, which he accomplished in 1988-89. He is also one of only four players in league history to record a quadruple-double, and holds the record for most blocks per game in NBA playoff history at 3.26.
In the 1993-94 season, Olajuwon became and remains the only player in NBA history to win the NBA MVP, Defensive Player of the Year, Finals MVP, and the championship in the same season. He was also the first foreign-born player to win the league's MVP award.
Olajuwon was born on the 21st of January 1963 in Lagos, Nigeria. He did not begin playing basketball until the age of 15, when he entered a local tournament while attending the Muslim Teachers College in Lagos. Before basketball, he played as a soccer goalkeeper, which gave him the footwork and agility that later defined his game.
The Dream Shake is a signature post move Olajuwon developed in which he uses a jump stop to avoid establishing a pivot foot, keeping defenders frozen while he chooses his next direction. Olajuwon traced the move to his soccer-playing days in Nigeria. Shaquille O'Neal described it as combining five base moves with four countermoves, yielding twenty possible actions.
Olajuwon was selected first overall by the Houston Rockets in the 1984 NBA draft. At that time, the first pick was awarded by coin flip; Olajuwon left the University of Houston early partly because he believed Houston would win the flip and he wanted to stay in the city. The coin came up in Houston's favor over the Portland Trail Blazers.
Olajuwon was inducted into the Naismith Memorial Basketball Hall of Fame as a member of the class of 2008. On the 10th of April 2008, the Houston Rockets also unveiled a sculpture in his honor outside the Toyota Center. He was later inducted into the FIBA Hall of Fame as part of the class of 2016.