Roughly one-third of the NFL began Organized Team Activities (OTAs) this week. It represents a big-time opportunity for 2026 NFL Draft rookies to make an impression while practicing alongside their veteran teammates. It also means pathways to 53-man rosters for undrafted rookies are beginning to be carved out.A number of NFL Draft sleeper prospects will start turning heads and proving they belong. With OTAs in full-swing for various organizations, we've identified 10 undrafted free agents who are worth monitoring at practice. The following prospects can start competing for roster roles.NFL OTAs: Undrafted Sleepers Who Can Start Turning HeadsNadame Tucker, EDGE, Los Angeles ChargersFeb 25, 2026; Indianapolis, IN, USA; Western Michigan defensive lineman Nadame Tucker (DL61) speaks during the NFL Scouting Combine at the Indiana Convention Center. Mandatory Credit: Kirby Lee-Imagn Images | Kirby Lee-Imagn ImagesAfter failing to establish himself at the University of Houston, Nadame Tucker transferred to Western Michigan and exploded. The athletic pass rusher recorded 14.5 sacks this past season. After going undrafted, the Los Angeles Chargers signed him to a contract that contained $287,500 in guarantees, according to Spotrac. The Chargers are fairly loaded at EDGE, but Tucker should compete for a 53-man roster spot, starting with a strong showing at OTAs.Taurean York, LB, Denver BroncosDec 20, 2025; College Station, TX, USA; Texas A&M Aggies linebacker Taurean York (21) celebrates during the game between the Aggies and the Hurricanes at Kyle Field. Mandatory Credit: Jerome Miron-Imagn Images | Jerome Miron-Imagn ImagesTaurean York led Texas A&M in tackles in back-to-back seasons with more than 150 combined takedowns. Sources indicate the Denver Broncos would have drafted linebacker Anthony Hill Jr. had the Tennessee Titans not traded up right in front of them. The linebacker-needy Broncos didn't draft one until making Red Murdock Mr. Irrelevant. They signed York to a massive undrafted contract that contains $325,000 in practical salary guarantees.Michael Trigg, TE, Dallas CowboysNov 22, 2025; Tucson, Arizona, USA; Baylor Bears tight end Michael Trigg (1) against the Arizona Wildcats at Casino Del Sol Stadium. Mandatory Credit: Mark J. Rebilas-Imagn Images | Mark J. Rebilas-Imagn ImagesFormer Baylor tight end Michael Trigg is an athletic pass catcher with shocking arm length and above-average speed. Trigg runs routes like a big wide receiver with initial quickness that threatens open-field space. He is a mismatch nightmare for both linebackers and defensive backs in coverage. Alleged character concerns contributed to him going undrafted, but the Dallas Cowboys made him an aggressive offer that totaled $280,000 in guarantees.Logan Fano, DE, Cleveland BrownsMay 8, 2026; Berea, OH, USA; Cleveland Browns defensive end Logan Fano (97) during rookie minicamp at CrossCountry Mortgage Campus. Mandatory Credit: Ken Blaze-Imagn Images