Attack (3 players)
Attackmen play in the offensive end. They are responsible for creating shots and scoring. Attack players are technically skilled with the stick, comfortable working in small spaces near the crease, and good at dodging and feeding. They generally stay in the offensive half of the field. In boys lacrosse, attackmen anchor behind the goal as well as in front of it. In girls lacrosse, the equivalent positions are called attack and work similarly.
Midfield (3 players)
Midfielders run the full field. They transition from defense to offense and back, which means they cover the most ground. Programs often subdivide midfield into offensive midfielders (who specialize in attack plays) and defensive midfielders (who specialize in defending opposing mids and face-offs). Face-off specialists are a distinct subset who line up for the draw after goals. Being a midfielder requires lacrosse fitness, meaning the ability to sprint repeatedly across a full field.
Defense (3 players)
Defensemen play primarily in the defensive end. They use longer sticks (up to 72 inches in boys lacrosse) that allow them to check and reach around opponents. Their job is to prevent shots and force turnovers. Communication with the goalie is constant. Defensive players who are physical, calm, and vocal tend to stand out.
Goalie (1 player)
The goalie carries a wider stick and directs the defense. Youth goalies develop positioning, communication, and reaction time. The mental side of goalie is significant because goals go on the scoreboard in an obvious way. Goalies who have a short memory for bad saves are more successful than those who dwell.
On-field numbers
Boys field lacrosse: 10 players per side (3 attack, 3 midfield, 3 defense, 1 goalie). Girls field lacrosse: 12 players per side at the full game level. Youth programs may use modified numbers and field sizes.