http://www.livescience.com/50134-pi-day-memory-experts.html
This article from pi day 2015 states, "The current Guinness World Record is held by Lu Chao of China, who, in 2005, recited 67,890 digits of pi." The article goes on to say that this man overcame a less than average digit-span score to memorize pi.

The current record holder took the title about one week later:
http://www.guinnessworldrecords.com/world-records/most-pi-places-memorised