From xG to eFG%: A Football Fan's Guide to Following Basketball

Every autumn the same thing happens: the football calendar fills up with midweek European nights, and at almost the same moment the basketball season tips off. If you already follow football through numbers — expected goals, form tables, odds movements — you have most of the toolkit you need to follow basketball too. The vocabulary changes. The questions do not.

The same question, a different unit

Football analysts keep asking whether a result was earned or lucky. Expected goals (xG) answers that by valuing every shot by its chance of becoming a goal. Basketball asks the identical question with different tools. Effective field goal percentage (eFG%) corrects for the fact that a three-pointer is worth more than a two, and true shooting percentage (TS%) adds free throws on top. A team shooting an unusually high eFG% on difficult shots is the basketball version of a side overperforming its xG: impressive, but unlikely to last for a whole season.

Possessions, not minutes

Football is low-scoring, so a single deflection can decide a match and the weaker side has a real chance on almost any day. Basketball produces dozens of scoring attempts per game, so luck averages out much more and the stronger team wins more reliably. That is why favourites in basketball often carry very short odds, and why the margin of victory matters more than the result when you judge form.

The practical lesson is to compare teams per possession rather than by raw points. A fast team and a slow team can both score 85 and be completely different in quality. Offensive and defensive rating (points scored and allowed per 100 possessions) remove the effect of tempo and let you compare like with like.

The four factors in five minutes

Statistician Dean Oliver’s “Four Factors” are a handy checklist for any box score:

• Shooting — effective field goal percentage for each side.
• Turnovers — how often a team gives the ball away before it can shoot.
• Rebounding — especially offensive rebounds, which create second chances.
• Free throws — how often a team reaches the line, and how well it converts.

Check these for both teams over their last five or six games and you will usually see why a side is winning or losing before the final score tells you.

Schedule effects travel across sports

Football fans know the pattern: a side plays in Europe on Thursday, again on Sunday, and rotates its squad. Basketball has the same problem in a more concentrated form. EuroLeague clubs combine continental rounds with domestic league fixtures, and NBA teams regularly play on consecutive nights. Rest days, travel and rotation belong on your pre-match checklist exactly as they do in football. So does home advantage: crowd, travel and familiarity matter in both sports, although how much differs from league to league and season to season.

Where to follow Ukrainian basketball

Following a sport is much easier in your own language. Basket.com.ua is a dedicated Ukrainian basketball website with news, interviews, statistics, a match calendar, blogs and a “basketball map”. Recent coverage has included EuroLeague round previews and regular roundups of Ukrainians playing abroad, which is a convenient way to keep track of national-team players scattered across different leagues. If you want fixtures and results of the Ukrainian Basketball SuperLeague next to statistics and news, having them in one place saves a lot of hunting through club pages.

A simple routine for a basketball matchday

1. Check the schedule: has either team played in the last 48 hours, and where?
2. Check availability: injuries and rest decisions change a basketball team more than most football absences.
3. Compare ratings per 100 possessions, not points per game.
4. Look at the Four Factors for the last five games.
5. Only then look at the price, and ask whether it reflects what you have just learned.

A worked example (with made-up numbers)

Imagine two teams that both averaged 82 points over their last five games. Team A plays at a slow pace and shoots an effective field goal percentage of 54%, turns the ball over rarely and rarely gets to the free-throw line. Team B plays fast, shoots 47% from the field, but forces plenty of turnovers and grabs a large share of its own misses. The scoreboard says they are identical. The four factors say they are very different: Team A’s results depend on shooting, which tends to regress, while Team B’s depend on effort plays, which tend to be more repeatable. If Team A has just had three games of unusually hot shooting from distance, you should expect the next game to look worse than the last three, much as a football side finishing every chance for a month usually cools off.

Five mistakes football fans make with basketball

• Reading one hot night as a trend. Three-point shooting is volatile from game to game; look at the quality of the shots, not only whether they went in.
• Comparing raw points. Tempo changes totals. Per-possession numbers are the fair comparison.
• Ignoring rest. The second game in two nights, or the third game in four, changes minutes and intensity.
• Forgetting the roster. One star missing from a basketball squad can shift a team’s rating far more than a typical football absence, because five players are on the floor and the best one handles the ball on many possessions.
• Treating a big win as a big gap. Garbage time, when benches play and the outcome is settled, can inflate or deflate a final margin.

Stay realistic about what numbers can do

Statistics describe probabilities, not certainties. The best model in the world still loses a third of its favourites, in basketball and in football. If you use any of this to inform a wager, keep stakes small, never chase losses, and only play if you are 18 or older. Our responsible gambling page explains the tools and resources available if you need help.

If you would like to see how we apply the same thinking to football, read how we build predictions on the methodology page, or explore our over/under and both teams to score markets. And if basketball is your next obsession, Ukrainian basketball news and statistics are a good place to start.