FLORHAM PARK, N.J. — There was no sign of Sam Darnold as the New York Jets opened training camp.

The No. 3 overall pick in the NFL draft officially became a contract holdout when the team began its first practice of the summer Friday without its prized rookie quarterback.

Darnold joins Chicago linebacker Roquan Smith, the No. 8 choice, as the only unsigned picks from the entire draft.

Under the NFL’s labor agreement, contract holdouts are uncommon because deals are slotted based on draft position. Darnold will receive a four-year, fully guaranteed contract worth $30.247 million, including a $20 million signing bonus.

The dispute seems to hang on contract language. If a player is cut during his rookie contract, offset language provides the team with financial protection. Not having offset language allows a player to receive his salary from the team that cut him, as well as get paid by another team that signs him.