The 59th minute: clean-sheet points or an early substitution?

The manager on the touchline is not thinking about your fantasy points. He has completely different calculations that can force an early change:

Minutes management: a player returning from a long injury may be following a strict rehabilitation plan that limits him to roughly 45–60 minutes to reduce the risk of a setback.
Second-yellow risk: when a defender, especially a full-back, is booked early and then has to face a quick, skilful winger, the manager may remove him before the situation turns into a red card.
Attacking changes and Plan B: if a team is losing or drawing and desperately needs a goal, the coach may sacrifice a defender for another creator or striker during the final half-hour.

How can you protect your squad from this trap?

To reduce the chance of being caught by a painful early substitution, keep three things in mind when choosing defenders:

Be careful with players returning from injury: however attractive the next fixture looks, make sure the player has fully recovered and is genuinely ready for 90 minutes.
Study the manager's substitution patterns: some coaches have a fairly consistent tactical routine and regularly refresh their full-backs around minutes 55–65 because of the physical demands of the role.
Centre-backs are usually safer than full-backs: central defenders are rarely substituted unless there is an injury, red-card risk or major tactical reason. Full-backs are much more common victims of tactical changes.

If it helps, you are not the only fantasy manager to suffer. These are three memorable examples:

Ben White (Arsenal) vs Brighton: Arsenal were ahead and White was heading toward clean-sheet points. He left at approximately 59:58 — literally seconds before completing 60 full minutes. The match record may round a substitution to minute 60, but FPL requires the player to complete the full 60 minutes. He therefore missed out on the clean-sheet award. The pain was softened later when Arsenal conceded twice in a 4-2 win.
Reece James (Chelsea) vs Bournemouth: this was Chelsea's first match after the Qatar World Cup break. James had returned from a long injury and Graham Potter had already discussed managing his minutes. James then felt knee pain and was substituted in the 53rd minute. Chelsea won 2-0, so a clean sheet was there for the taking, but he finished with only one point and then suffered another setback that kept him out for another month.
Tariq Lamptey (Brighton) vs Newcastle: Lamptey produced an excellent individual display and Brighton were protecting a clean sheet. Newcastle's players struggled with his pace and began challenging him aggressively, so Graham Potter chose to protect him. The broadcast clock showed roughly 59:57 as Lamptey left the field — around three seconds short of 60:00. The official report recorded the substitution even earlier. Those seconds cost him the clean sheet and potential bonus, leaving him with only four points.

Tell us in the comments: which defender has hurt you most with a 59th-minute substitution?