Herbert and Rodionov traded holds through a tense set, with Herbert saving a break point for 3-2 and Rodionov saving two for 2-2, before Rodionov clinched the tiebreak after 60 minutes.
Herbert broke for 4-3, but Rodionov saved two break points in a hold for 4-5 before breaking back for 5-5, then Herbert broke for 6-5 and held for 7-5.
Herbert broke for 1-0 and again for 3-0, then held for 2-0, 4-0 and 6-0, dismantling Rodionov in 24 minutes.