Notable fights, during this time, include a points decision victory against future WBA super flyweight champion Tepparith Singwancha.
[4][5] He is part of Nakhornluang Boxing Promotions under Suchart Pisitwuttinan, the manager of two former WBC world champions (Veeraphol "Death Mask" Sahaprom and Sirimongkol Singwangcha).
[6][7] On August 19, 2011, he successfully dethroned Mexican Tomas Rojas with a unanimous decision victory, to capture WBC super flyweight title at Srisaket, Thailand.
[3][8] Rungvisai won his first title defense against, former two-time WBA super flyweight champion Nobuo Nashiro of Japan, winning a unanimous decision, with scores of 115-113, 119-109, and 116-113.
On October 22, 2014, he lost to Shinsuke Yamanaka for WBC bantamweight class at Yoyogi National Gymnasium, Tokyo, Japan, losing with a unanimous decision, with scores of 114-110, 116-108, and 115-109.