Myler opened the scoring in the fifth minute when Kearnan Myall was sin-binned for punching, but he missed a relatively straightforward drop-goal opportunity and a penalty kick minutes later.
Moldovan prop Vadim Cobilas, hooker Joe Ward, number eight Mark Easter and locks Fraser McKenzie and Kearnan Myall all took their bow, along with centre Andrew Higgins and winger Joaquin Tuculet.
Meanwhile, Leeds will be without flanker Kearnan Myall for Sunday's European Challenge Cup game with Crociati at Headingley because of the leg injury he picked up in the defeat at Harlequins.