Football
What is a sweeper / libero, and where do they play?
Provides cover behind the other defenders in a system using a sweeper. Libero is an Italian term often used alongside sweeper. This historical role is not a required position in every modern team.
The diagram uses a Libero setup, attacking from left to right. Yellow markers identify the position being discussed; they are not average match coordinates. For left/right pairs, the top of the diagram is the attacking team’s left side.
Responsibilities in three phases
- In possession: After recovering the ball, launch a pass or carry forward to connect with midfield.
- Out of possession: Read balls that pass beyond teammates and cover the space behind the line contesting possession.
- Transitions: Choose when to advance after a regain and identify who will protect the space being left.
The tactical discussion draws on Coaches’ Voice — The libero. The wording and exercise below are FootballCap’s own.
Position versus role
A modern center back carrying forward is not automatically a libero. Examine the out-of-possession structure and who provides the deepest cover.
Historical data: the Defender group
| Measure in the historical dataset | Result |
|---|---|
| Records labeled Defender | 1200 |
| Records with height greater than zero | 1174 |
| Records without a valid height | 26 |
| Median height, cm | 184 |
Source: Players — Pappalardo et al. (2019), CC BY 4.0. FootballCap recalculated these values from the original file. This is a transformed summary, not a table supplied by the authors.
Limitations: The dataset uses four broad labels and does not isolate SW / historical role. These are historical player records pooled across competitions, not appearances or current-season statistics. Height does not measure tactical ability and is not a selection threshold. Do not use this figure as a standard height for this position. See the methods, four groups, and downloads.
What to watch
The historical dataset has no Sweeper label. It cannot establish the number of liberos or a libero-specific height; the Defender group supplies only broad context.
A position-reading exercise
Place a sweeper behind two defenders. Send an opponent toward the wing and compare the setup with a flat back line. Observe the implications of leaving one player deeper. The board tests structure; it does not simulate an official’s offside decision.
Use three columns: what you see, alternative options, and what you cannot yet conclude. These are original exercises; repetitions on the tactics board are not player-performance data.
Keep exploring: Defensive block · All football positions · Open the tactics board.
References
- Coaches’ Voice — The libero
Source checked: 2026-09-09 - Pappalardo et al. (2019) — Players, CC BY 4.0
Source checked: 2026-09-09 - Creative Commons Attribution 4.0 License
Source checked: 2026-09-09
FootballCap summarized Pappalardo et al. (2019), Players, CC BY 4.0, excluding missing heights and calculating medians. Coaching sources are paraphrased and linked; their images and videos are not reproduced.