LOS ANGELES, CA – NOVEMBER 18: Sam Darnold #14 of the USC Trojans scrambles out of the pocket during the second quarter against the UCLA Bruins at Los Angeles Memorial Coliseum on November 18, 2017 in Los Angeles, California. (Photo by Harry How/Getty Images)The 2018 NFL Draft concluded three months ago. However, four picks from that draft have yet to sign their rookie contracts.The No. 1 overall pick, quarterback Baker Mayfield, signed his contract on Tuesday night. He was quickly followed up by Buffalo Bills rookie quarterback Josh Allen, who signed Wednesday morning.That left four players from the 2018 draft who have not signed.Here are the four, via Field Yates:Sam Darnold, QB – New York JetsDenzel Ward, CB – Cleveland BrownsRoquan Smith, LB – Chicago BearsDante Pettis, WR – San Francisco 49ersAll four are likely to sign this week. Rookies from around the country are entering their rookie training camps this week, while the veterans will report soon after.Dante Pettis reportedly attended 49ers camp today and will likely sign in the near future. A rookie holdout is unlikely, but they have happened in the past.Two years ago, former Ohio State star and current Los Angeles Charger Joey Bosa held out until August. We’ll have to wait and see if any of the 2018 picks enter a holdout. UPDATE: The Browns have now signed Denzel Ward.Browns GM John Dorsey announces team has agreed to terms with DB Denzel Ward. 2018 class all sewed up.— Andrew Gribble (@Andrew_Gribble) July 25, 2018That leaves three players from the 2018 draft unsigned.