Yiliang "Peter" Peng (Chinese: 彭亦亮[1]; pinyin: Péng Yìliàng), better known as Doublelift, is an American content creator, streamer, and retired professional League of Legends player.

Peng is considered as one of the greatest North American League of Legends Championship Series player of all time.

"[3] Peng comes from California, and started playing console games before jumping to PC titles such as DotA, World of Warcraft, and Heroes of Newerth, eventually moving to League of Legends.

[citation needed] In an interview with Machinima in 2013, Peng said his relationship with his parents was strained, because of his dream of being a professional esports player.

"[4] Peng first entered professional League of Legends when he gained the attention of George "HotshotGG" Georgallidis, founder of Counter Logic Gaming (CLG), who recruited him as a substitute Support player.

[4] Peng wrote about the event on Reddit in a thread titled "Hi I'm Doublelift, formerly of team [Epik Gamer], and today I became homeless.

Peng began earning money for writing educational League of Legends content for Team Curse.

Falling to the losers bracket, CLG Prime would sweep Curse Gaming in round one, and then pick up a close 2–1 series against another NA team Dignitas.

[7] On February 27, 2013, CLG participated in the Riot Season 3 North American League Championship Series Spring Split.

Ultimately, CLG lost to Team Liquid in the quarterfinals and ended the split tied for fifth place with Gravity Gaming.

[14] After CLG released a statement, Team SoloMid announced that Peng would be joining, replacing long tenured AD Carry WildTurtle.

[17] In summer, Team SoloMid added a new support to pair with Peng in the botlane, picking up Vincent "Biofrost" Wang.

[23] Before the start of the 2017 season, Team SoloMid announced that Peng would be taking a hiatus from professional League of Legends during the spring split, saying "it's time for a small break."

"[25] In a Reddit AMA in 2014, Peng said "Most people who look at pros think that we live the dream life when in reality you either practice 16 hours a day or lose and end up frustrated.

[29] Before the start of the 2018 NA LCS season, Team SoloMid announced they would be parting ways with Peng, citing a desire for a stronger shot-caller in the bottom lane.

[30] On the same day, Team Liquid announced Peng would be returning along with his ex-Counter Logic Gaming teammates Xmithie and Pobelter.

Peng posted on Twitlonger "I'm still processing this news and joining up with my dad and little brother to make sure they're ok and the proper arrangements are being made.

"[4] Despite the pressure faced during this event, Steve Arhancet, owner and co-CEO of Team Liquid, announced that Doublelift would not be taking time off and was determined to play in the final as planned.

A tightly contested regular season saw Team Liquid come out with the number one seed by only a single game over Cloud9, qualifying them for a bye in the first round and a guaranteed spot in the semi-finals.

In the semifinals, the 4th seeded Team Liquid upset the defending world champions, Invictus Gaming, 3–1, and advanced to the finals,[43] where they faced G2 Esports, and were ultimately defeated in a 3–0 sweep.

[46] In the summer playoffs, Team Liquid beat Clutch Gaming 3–2, and secured a spot at the 2019 League of Legends World Championship.

[52] Doublelift publicly apologized to his teammates for his attitude, and promised to work harder to return to the LCS stage.

[53] Doublelift returned to the starting lineup the following week, but ultimately Liquid finished the split in 9th place and did not make 2020 Spring Playoffs.

Although they were third in LCS, critics deemed their wins unconvincing and some considered their record as not properly reflective of their actual skill level.

[58] In the middle of the split, Biofrost was replaced by TSM Academy support Treatz, with the team citing better communication and playmaking as the deciding factors.

Successfully completing their miraculous lower bracket run, Doublelift and TSM headed to Shanghai for the 2020 World Championships as the NA 1st seed.

[62][63] In November 2020, Doublelift announced on his Twitter account that he was retiring from professional League of Legends, thus concluding a storied career which spanned nearly a decade.

[64] On March 11, 2021, TSM announced on their Twitter that Peng was returning to the organization as a full-time content creator and streamer.

[65] Several months after his retirement, Peng revealed a significant reason he walked away from the pro scene was due to discontent with Team SoloMid, even going so far as to say "I fucking hate TSM" as well as accusing the owner, Reginald, of abuse,[66][67][68] and left the organization entirely in November.

[76] Peng said "Travis really helped me grow up as a person because when I'm playing games and focusing on my job you don't have basic social skills or an understanding of the world.