A yellow flag doesn't exist in lacrosse. What a new spectator sees instead is an official's raised hand, a whistle, and a player jogging off toward a marked box at the sideline — and for anyone watching their first game in Boulder County, that sequence is usually more confusing than the game itself. USA Lacrosse writes …

A shot sails wide, clangs off the post, and for two full seconds nobody on the field actually controls the ball. What happens in that scramble — who gets low first, who shields the stick with their body, who comes up running instead of standing still over it — decides possession as surely as any goal on the board. USA …

Two players drop into a crouch at midfield, sticks flat against the turf, ball wedged between the heads. For the fraction of a second before the whistle blows, an entire lacrosse game hangs on what happens next. The faceoff — and its women's-game cousin, the draw — decides who starts every possession, and for a new …

A stick, a ball, and any flat wall are enough to build real stick skills before a new player ever steps onto a full practice field. That simplicity is why wall ball has been the go-to solo drill for generations of lacrosse players, and why it's still the first thing most coaches point a beginner toward. USA Lacrosse — …

Watch a Colorado Mammoth game at Ball Arena one weekend and a CHSAA high school match the next, and it can feel like two different sports sharing a name and a stick. Box lacrosse and field lacrosse both trace back to the same game, but the National Lacrosse League and USA Lacrosse govern versions built around different …

Box lacrosse packs a full professional season into fewer games than most sports play in a single month. The National Lacrosse League runs on an 18-game regular season — short enough that no losing streak goes unnoticed, tight enough that every winter home game at Ball Arena matters for the playoff bracket that closes …

The first time you watch a lacrosse game, ten players per side are moving at full speed with no obvious pattern. Within a few minutes of understanding the positions — who stays where, who can go anywhere, and what each role is responsible for — the action snaps into focus. USA Lacrosse governs the sport at every level …

For Boulder County lacrosse families, the Premier Lacrosse League (PLL) is the easiest way to watch the best outdoor players in the world — and in 2026 there are more reasons than ever to follow along from the Front Range. Colorado has its own team in the Denver Outlaws, a Colorado-grown star starring elsewhere in the …

One goal. After a season that put the Front Range's pro lacrosse team back among the best in the world, the Colorado Mammoth's 2025-26 campaign ended on a single overtime goal — a 13-12 loss to the San Diego Seals in the National Lacrosse League quarterfinals on April 25, 2026. For Boulder County fans who made the …

School's out, the spring CHSAA season is over, and your player still wants to pick up a stick three times a week. Summer is when Boulder County's lacrosse families start hunting for camps — and the search window is short, because the good ones fill up fast. This guide walks through the kinds of camps available near …