Thundermore was initially trained at Matamata by Peter McKay, who bought the horse as a yearling and developed him into the winner of three races from 18 starts.
He registered his first win on good ground over 1200 metres second-up at Hastings in August 2009 and a year later he deadheated for first over 1300 metres at Taupo, on a slow track.
He then completed a double with a Hastings 1600-metre win and had to later settle for a few placings, including a half-head second over 2200 metres at Te Aroha, before changing hands.
Thundermore will be ridden by Myers' niece, Kelly, in the Rotorua event and could get most opposition from Seigal, Dickens, The Muffin Man and De'Colletage, while other improvers could be Coolross, Count On and Zlato.
SELECTIONS
12.24: Embroid Me @ Speedy Signs Rotorua 1230: Kapsboy, Walsburgs Keeper, Little Rocket.
12.58: AJ and Chloe For Breakfast On Classic Hits 1230: Rio Diva, Thunderbird One, Wiseguy.
1.36: Stay Clever @ Holiday Inn Rotorua 1230: Hey Bruce, Oh Em Gee, Android.
2.09: Farewell John Humphries 2200: Speedup, Supercharged, Little Matey.
2.44: NZI 1950: Thundermore, Seigal, The Muffin Man.
3.20: Lewishams Cafe & Restaurant 1230: Fine Line, Enjoyit, Hug A Ginga.
3.56: Thanks For 50 Years Service Don Deare 1400: Roll With Pulse, Monkey Rock, Andi Black.
Best bet: Thundermore.
Best longshot: D'Llaro (r4).