Chauhan is a finger spinner — a slow left-arm orthodox — who bats right-handed at the tail end of the order. His domestic bowling record shows a containing, wicket-taking role rather than a strike-bowler one. In five recorded National One Day (List A) matches for Lumbini Province in March 2025, his figures ranged from an expensive 0/47 to a much sharper 4/47, suggesting inconsistency common in a bowler still establishing himself at the senior domestic level.

In a 2026 PM Cup match against Sudur Paschim Province, he was the last man out for a duck, batting at number 11 — consistent with his profile as a specialist bowler with little batting expectation.

Chauhan came through Nepal's provincial system with Lumbini Province, including its Under-19 setup. Detailed, verifiable information about his school or age-group career beyond this is limited in public reporting.

Chauhan represents Lumbini Province in Nepal's domestic structure, playing in the PM Cup Men's National Cricket Tournament and the National One Day competition. Verified performances include five National One Day matches for Lumbini Province in March 2025, with a best return of 4/47 against Army; a PM Cup appearance against Bagmati Province in which he picked up 1 wicket; and a PM Cup 2025–26 fixture against Sudur Paschim Province in which he was the last man dismissed for a duck, batting at number 11.

A fully aggregated domestic career stats table (career-total matches, runs, wickets, average, economy) is not comprehensively published on the major stat trackers checked for this profile. Chauhan has not represented the Nepal senior national team in any format based on currently available records.

Chauhan has not represented the Nepal senior national team in any format (T20I, ODI, or Test) based on currently available records, and there is no confirmed record of Under-19 international caps either — only domestic Under-19 provincial cricket with Lumbini.

Chauhan makes his NPL debut in the 2026 season.

NPL 2026 (Season 3): Signed by Lumbini Lions for Rs 200,000 at the auction held in early July 2026. He joins the reigning champions as a new domestic squad addition alongside Aakash Tripathi and Arniko Prasad Yadav, while the franchise's headline signing of the auction was wicketkeeper-batter Aasif Sheikh.

He was not part of the Lumbini Lions' 2024 or 2025 NPL squads, so there is no NPL-specific playing record for him before the 2026 season. The 2026 season runs from November 17 to December 13, 2026, at the Tribhuvan University International Cricket Ground, Kirtipur.

There is no publicly available record of Ajay Chauhan captaining a side at any level.

2003 — Born March 24 in Bhairahawa, Nepal.

— Rose through Lumbini Province's domestic and Under-19 structure.

March 2025 — Featured in five National One Day matches for Lumbini Province, best figures 4/47 vs Army.

2025–26 — Appeared in PM Cup fixtures for Lumbini Province, including a match against Sudur Paschim Province.

July 2026 — Signed by Lumbini Lions for Rs 200,000 at the NPL Season 3 auction — his NPL debut signing.

November–December 2026 — Set to make his NPL debut for Lumbini Lions.