On Supercard of Honor X Night 1 at April 1, 2016, Rush unsuccessfully challenged Jay Lethal for ROH World Championship. On March 31, ROH announced that Rush had signed a contract with the promotion. Rush went on to compete in the 2016 Top Prospect Tournament, defeating Jason Kincaid on January 9, going on to defeat Brian Fury on February 6 to win the tournament. Rush made his debut in ROH on December 19, 2015, beating Vinny Marseglia in a dark match. After getting more experience wrestling on the independent circuit, Rush took part in another training camp and, now with the backing of Kevin Kelly, Steve Corino, Adam Cole, Jay Lethal and Kyle O'Reilly, was signed as a participant in the 2016 Top Prospect Tournament. He, however, was not signed due to his limited experience.
#LIO RUSH CAGEMATCH PROFESSIONAL#
Six months after his professional wrestling debut, Rush took part in a Ring of Honor (ROH) training camp. Rush defeated Janela at CZW Once in a Lifetime for his last match in CZW and against Janela. On July 8, Rush announced that he would be making his final CZW appearance on August 5.
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He lost the belt to Davey Richards at a non-CZW(DEFY Wrestling) show, ending his reign at only 17 days. On May 13, 2017, Rush beat Joe Gacy for the CZW World Heavyweight Championship. Rush lost the Wired title back to Janela in a Ladder Match at Down with The Sickness on September 10, 2016, After his feud with Janela was over he stepped out of the Wired Championship picture and started a feud with Sami Callihan becoming a heel in the process for the first time in his career and adopted a darker gimmick. On March 26, 2016, at CZW Proving Ground, Rush defeated Joey Janela, Dave Crist and David Starr to win the CZW Wired Championship. He lost his title against Joey Janela on February 13 at CZW Seventeen. He made his first successful defense against Kevin Bennett on January 16.
#LIO RUSH CAGEMATCH TV#
On December 12, during Cage of Death XVII, he won the CZW Wired TV Championship, defeating Janela for the title. At Night of Infamy, on November 21, he wrestled Joey Janela for the CZW Wired Championship on a losing effort. On September 12, he changed his name to "Lio Rush" and started a feud with Joey Janela, where he faced him, Trevor Lee and Caleb Konley at Down With the Sickness 2015, match won by Janela. He and Clark began to compete together as known as Sudden Impact. Green, as Lennon Duffy, made his debut for Combat Zone Wrestling (CZW) on December 31, 2014, defeating Slugger Clark. Rush lost the title to HOG World Heavyweight Champion Anthony Gangone in a title for title match at House of Glory's "Never Trust a Snake" on July 1. On May 27, 2017, Rush defeated Ken Broadway at House of Glory's "Adrenaline" to capture the HOG Crown Jewel Championship, ending Broadway's almost year long reign. On February 18, 2017, Rush made his debut for Pro Wrestling Guerrilla at "Only Kings Understand Each Other", where he was defeated by Ricochet. On Saturday June 25, 2016, he was defeated by Michael Elgin. On Thursday June 23, 2016, Rush defeated David Tita in the first day of the Elite World Championship to make the quarter final. Lucha Libre Elite announced Rush as a participant in the Elite World Championship. He lost his match against Ethan Page the following day. He also competed for Evolve Wrestling where he defeated Fred Yehi on November 6. They lost the title thirteen days later to The Ecktourage. On October 3, he and his teammate Patrick Clark won the MCW Tag Team Championship, defeating The Hell Cats and The Ecktourage. On July 18, he won the Shane Shamrock Memorial Cup XV, defeating Brandon Scott, Drolix, Eddie Edwards, Matt Cross and Shane Strickland in a six-way elimination match.
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He debuted at the 2014 Tribute to the Legends and created a tag team named "Sudden Impact" with Patrick Clark, who would go on to work for WWE as Velveteen Dream. He learned wrestling during 2014 with MCW Training Center. Rush debuted under the ring name "LI Green", but after a negative response to the name from promoters, he changed it to "Lennon Duffy".