Defending champion Judd Trump came from behind to beat Matthew Selt and move into the last 16 of the Northern Ireland Open in Belfast.Trump, looking to win the title for a fifth time, bounced back from 2-1 down to see off Selt 4-2, closing with a break of 141.Stuart Bingham also made safe progress through round two, defeating Mark Davis 4-0, and will now face Shaun Murphy for a place in the quarter-final after he recovered from two frames down to beat Zhou Yuelong 4-2.There will also be a meeting between Louis Heathcote and Tian Pengfei after they advanced with 4-1 wins over Jimmy Robertson and Robert Milkins respectively.The day's first-round action included world champion Kyren Wilson edging David Grace 4-3, Mark Williams easing past fellow Welshman Jamie Clarke 4-0 and Ali Carter going down 4-1 against China’s 21-year-old Ma Hailong.