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FlopZoom Tutorials: Intermediate
AF

AF, the Aggression Factor, is different than VPP and PRP. AF is the ratio of bets + raises to calls, while the others are percentages. As its caption suggests, you calculate this ratio by adding the count of a player's opening bets and raises, then dividing that sum by the count of calls the player made. Easy.
 

What's the best AF?
An AF value of 1.0 means that a player bet and raised exactly as many times as they called. More bets and raises than calls gives an AF of more than 1.0, and fewer bets and raises than calls gives an AF of less than 1.0. There are many opinions on how aggressively you should play to maximize your results. The general consensus seems to be that for full tables (7 or more players) your AF should be somewhere between 1.0 and 1.5. Less than 1.0 indicates a passive calling style. Greater than 1.5 indicates an aggressive raising and betting style.

Of course, as with many other things in poker, "it depends". If you are playing at a short-handed table and your M is shrinking late in a tournament, an aggressive style is absolutely necessary. And adapting your playing style and starting hand values to counteract your opponents' playing styles can skew your AF in many circumstances.

To illustrate, here's the same statistics chart we showed you in the PRP tutorial:

tutorialstatisticsvppprpaf1

 

Four AF bars plus an average bar
You can see four vertical per-street AF bars for each player. These represent, from left to right, a player's preflop, flop, turn, and river AF numbers. Each group of AF bars can have a horizontal average bar showing the average of either three or of the streets. (If the average AF is too low, the average bar will not appear.) The average value is displayed in a caption within the bar, with the exact average indicated by a line underneath the caption.

The average value is the same value that was represented by a single bar in earlier versions of FlopZoom. It's much easier to compare players' average values than to try to pick out and compare their specific street bars. You can choose to include the preflop AF number in the average, but this is usually not done. The VPP and PRP statistics can give you a good picture of a player's preflop playing style.

Note that the average AF is not the sum of the streets' AF values divided by the number of streets. It's the total number of bets and raises the player made in the entire session divided by the calls made in the entire session. (Excluding or including the preflop numbers, depending on your choice in the "Include Preflop in AF" option in the preferences window.)
 

Zero, infinite, and n/a
AF can range from 0 to infinity. For example, if a player makes 2 raises, 1 open bet, and no calls, his AF would be 2 + 1 divided by 0. FlopZoom shows infinitely large AF values as translucent full-height bars. You can see this in fz_rival_C's turn AF bar (in translucent green) near the right edge of the graph.

At the other end of the spectrum, PlayerZero0's flop and turn AF are 0. He has an extremely low AF, possibly because he was multi-tabling and focusing on a more profitable session. (Or maybe because he was testing and debugging FlopZoom while he was playing...)

You can also see several 1-pixel high bars labeled "n/a" in the example. This is a special case where a player made zero bets plus raises and zero calls. This results in an AF of 0/0, which has no meaning.
 

Interpreting the numbers
AF can tell you if a player likes to build a pot and force people to have hands or if they would prefer to control the pot size and see the next card relatively cheaply. It is also an indicator of how much a player bluffs and bullies when they have a big stack.

In the above example, PlayerZero0 clearly played a very weak-passive style. He played fewer hands than the other selected players, as indicated by his small VPP. He raised preflop less than the other chosen players, as shown by his low PRP. And his AF is very low, indicating that he made fewer open-bets and raises in comparison to the number of calls he made.

A far more aggressive style is indicated by fz_rival_B's AF average of 4.33 (in blue). We can see that he too played fairly passively preflop, as indicated by his preflop AF of 0.58. But he aggressively bet or raised the flop, as shown by his flop AF of 5.5. His turn af of 2.0 indicates fairly good aggression on the turn, but he again calmed down on the river as shown by his 0 river AF.

To see how important it is to know a player's per-street AF, take a look at the average AF of fz_player_1 and fz_rival_C (in red and green, respectively.) Their average AF is identical, at 2.0. The player in red, fz_player_1, played the flop fairly aggressively, as shown by his flop AF of 2.0. But he never played any hands past the flop. His AF on turn and river is shown as "n/a" which means he made no bets, raises, or calls on either street. This is why his average AF is equal to his flop AF.

On the other hand, fz_rival_C (in green) played slighly less aggressively on the flop, as shown by his flop AF of 1.5. But his turn AF is, literally, off the charts. He bet and/or raised and never called, so his turn AF bar is infinitely tall.

So yes, different per-street AF numbers can result in identical average AF values. But exactly how many bets, calls, and raises did each player make on each street and overall? Just click for detail...
 

Click for Detail
Clicking on PlayerZero0's black preflop AF bar, we see:

tutorialstatisticsaf1

He bet and raised three times, and made five calls, for a preflop AF of 0.6. Clicking on his 0-height flop and turn numbers, we see that he made one call on the flop and turn and no bets or raises on either street.

tutorialstatisticsaf2


tutorialstatisticsaf3

To get the numbers for fz_rival_C's average AF, we just click on his green average AF bar:

tutorialstatisticsaf4

We see that he bet and raised two times, and flat-called four times. Aggressiveness is a key factor in winning poker play, especially in tournaments with fast blind schedules. fz_rival_C's average AF of 2.0 indicates a more appropriate aggressive playing style than PlayerZero0's 0.6. (Remember that this tournament's blinds increased very rapidly, which reduces your M rapidly.)

To get the specific numbers for fz_rival_C's flop and turn play, we click those two bars:

tutorialstatisticsaf5

tutorialstatisticsaf6

The flop numbers show fairly aggressive flop play (1.5 AF) and although the turn AF is infinite, fz_rival_C only made one bet or raise and made no calls.

We can add yet more context to the statistics if we click over to the analysis pane's cards graph, but we'd be getting ahead of ourselves. That's covered in the advanced tutorials. If you keep reading, you'll get there.
 

Position and opponent count
Just as in the VPP tutorial, you can filter your results for any number of opponents, or full table, short handed, or heads-up. And you can also show PRP for any position or filter for an exact position or a position range.
 

No instant playback
Instant playback has not been enabled for AF. Why not? Because AF is a ratio of bets and raises to calls. We feel that there would simply be too many hands to provide a focused, meaningful list of hands in the playback pane.
 

Summary
AF, along with VPP and PRP, are probably the most important statistics you can use to analyze poker play. That's why they're turned on by default when you first start FlopZoom and click to the statistics pane. Together, they can give you a quick picture of how loose or tight and how aggressive or passive a player is. All in real time, of course, so you can fight back at the bullies looking to steal your blinds too often and bust the rocks with their rare and obvious big pairs.

Intermediate Tutorials:
VPP | PRP | AF | SDP | SWP | UBP | AIP | Intervals