 Complete the following phrase:  There have been nine maximum breaks in the history of the tournament. The first was made by Ronnie OSullivan in 1999 against James Wattana. The second was made at the qualifying stage of the 2000 event by Barry Pinches against Joe Johnson. The third was made by Andrew Higginson in 2007 against Ali Carter. The fourth 147 was made in 2011 by Hendry against Stephen Maguire. This was Hendrys 10th 147 break and with this he equalled the record for most maximums with Ronnie OSullivan. He also became the oldest player to compile a maximum break at the age of 42 years and 35 days. The fifth was made by OSullivan in 2014 against Ding Junhui. This was OSullivans 12th 147 break, it was the last visit to the table in the tournament - beating Ding Junhui 9-3 - before the event moved to Cardiff, and with it he set the record for most maximums. Ding Junhui made the sixth at the quarter-finals of the 