On January 1, 2015, Gasol recorded a career-high 9 blocks, along with 17 points and 9 rebounds, in the 106-101 win over the 2014-15 Denver Nuggets season. Ten days later, he scored a career-high 46 points on 17-of-30 shooting in a 95-87 win over the 2014-15 Milwaukee Bucks season. On April 9, 2015, he recorded a league-best 51st double-double of the season with 16 points and 15 rebounds in an 89-78 win over the 2014-15 Miami Heat season. He recorded his 54th double-double of the season in the regular season finale on April 15 against the 2014-15 Atlanta Hawks season to finish as the league-leader in double-doubles in 2014-15.
Question: How many double-doubles did Gasol earn from April 9th to April 15th?
Answer: 3