A suture system configured to place suture in tissue includes a tool and a suture assembly. The tool includes a head having a proximal portion housing a needle and a distal end spaced apart from the proximal portion. The needle is movable through a needle exit port formed in the proximal portion of the head to a cavity formed in the distal end of the head. The suture assembly has a length of suture connected to a leader plug, and the leader plug includes a substantially solid proximal portion. The leader plug is removably retained in the cavity formed in the distal end of the head and the needle is operable to penetrate and engage with the substantially solid proximal portion of the leader plug to allow the needle to extract the leader plug out of the cavity and secure the leader plug in the needle exit port.