What eFG% Actually Tells You
Forget raw FG%. That number is a fossil. Effective field goal percentage (eFG%) strips the fluff, rewarding three‑pointers and punishing wasted attempts. In betting, you chase edges; eFG% is a razor‑sharp edge.
How to Calculate It On the Fly
Take a player’s total field goals made, add 0.5 times his three‑point makes, then divide by attempts. Simple math. The result? A single digit that tells you if a shooter is truly efficient or just a volume junkyard.
Spotting Inflation in Small Samples
Hot streaks inflate eFG% like a balloon. Five perfect threes and you look like a god. Reality: variance. Betters who treat a ten‑shot burst as a trend get burned. The trick? Use rolling windows of 30+ attempts before trusting the metric.
Team Context Matters
Some systems flood the floor with catch‑and‑shoots, padding individual eFG% without real difficulty. Others force mid‑range dribbles, dragging the stat down. Compare a player’s eFG% against his team’s pace and spacing; that’s where the signal shines.
Why eFG% Beats Traditional Lines
Bookmakers love traditional FG% because it’s familiar. Bettors, however, want the hidden value. When a team’s roster collectively posts a league‑average eFG% but its defensive rating is in the bottom quartile, expect over‑performance on the over/under.
Integrating eFG% Into Your Wagering Model
Step one: Pull the last 30 games for each player. Step two: Compute a weighted eFG% that rewards recent form. Step three: Adjust for opponent defensive eFG% allowance. The resulting figure plugs into any Poisson or logistic model you prefer.
By the way, for a ready‑made dashboard that does the heavy lifting, swing by nbastatsforbetting.com. It slices eFG% by game, pace, and opponent, all in real time.
Common Pitfalls and How to Dodge Them
Don’t cherry‑pick a player because his eFG% spikes against a weak defense. That’s a trap. Don’t ignore the three‑point attempt rate; a high eFG% with zero threes is meaningless. And never rely on a single season; trends dissolve fast.
Final Edge
Pick games where the projected total eFG% gap exceeds the bookmaker’s line by at least 2.5 points, then back the over. That’s the sweet spot. Act now.
