The short answer
First establish what is legal in this match. MCC Law 28 covers fielder placement, pitch encroachment and movement, including the restriction on fielders behind the popping crease on the on side. Limited-overs competitions add phase-based circle rules. The referenced men's ODI conditions use different outside limits across three phases; the referenced men's T20I conditions use a powerplay limit and a non-powerplay limit, with an over-rate provision that can tighten the field further. Domestic, junior and shortened matches may differ, so the umpire and current competition document outrank a remembered international diagram.
Start with the legal field
Count the side aloud when the field changes: bowler, wicketkeeper and nine other fielders. The wicketkeeper is not an extra eleventh position after nine dots have already been placed. In a Test field, those nine may include several slips and close catchers. In a limited-overs phase, some may be outside the marked circle and the rest must stay inside at the instant of delivery. Recount after a batter changes ends, a substitute arrives or a fielder crosses from one side to the other. A tactically clever map is worthless if it creates a no-ball.
Count all eleven players correctly
Choose one primary match objective for the next over. Taking a wicket may be worth more than saving a single when the ball is new or a new batter arrives. Denying boundaries may dominate late in a chase, while stopping strike rotation can be the best pressure method against an established batter and a weaker partner. State the objective in plain words: edge the batter, attack the stumps, force the loft to the long side, or deny the easy single. Trying to attack every dismissal and protect every boundary usually produces a field that does neither well.
Choose one match objective
Now ask what the bowler can actually repeat. A right-arm seamer who controls a fourth-stump length can use slips, gully and an off-side ring because the ball visits those zones. A bowler drifting onto the pads cannot be rescued by adding another slip. A spinner must state stock-ball direction, pace and variation; 'spin field' is not specific enough. The best field setting for fast bowling and the best field setting for spin bowling begin with different release, bounce and mistake patterns, but both require the same honesty about control.
Name the ball the bowler can repeat
Connect that ball to two maps: the intended wicket and the likely scoring shot. For fourth-stump outswing, outside edge to keeper or slips may be the wicket, while a square drive, cut or glide may be the release. For straight inswing, bowled, lbw and a leg-side catch become more credible, while the clip and glance need attention. For off-spin into a right-hander, bat-pad, inside edge, stumping and a mistimed leg-side loft are plausible only when length and turn support them. Place fielders where the planned ball sends evidence, not where the last unrelated boundary travelled.
Map the intended wicket and expected shot
Build outward in three layers. First choose only catchers who can receive the planned chance. Second place ring fielders to close the easiest singles and intercept the controlled scoring shots. Third spend the allowed boundary protection on the highest-value miss or loft. A ring fielder should know whether to attack the ball, hold the single or protect a catcher. A rider should know the likely trajectory, the backup partner and the throwing end. This sequence prevents the common habit of placing boundary riders first and scattering the remaining fielders into unnamed gaps.
Build from catchers to ring to boundary
For a new-ball right-arm seamer bowling away from a right-hander in a setting without a white-ball circle constraint, an attacking example is wicketkeeper, three slips, gully, point, cover, mid-off, mid-on and fine leg around the bowler. The catching group supports the outside edge; point and cover control width; straight fielders make the drive earn runs; fine leg covers the pad miss. If the bowler loses swing or repeatedly bowls short, remove a catcher for square-leg or boundary protection. The best attacking field in Test cricket survives only while the planned edge remains credible.
A new-ball pace example
For right-arm off-spin into a right-hander, an attacking example is wicketkeeper, slip, short leg, point, cover, mid-off, mid-on, midwicket and square leg around the bowler. Slip and short leg support edge and bat-pad chances; the ring challenges rotation and the straight loft. If the batter sweeps reliably, move the least credible catcher to deep square or fine leg when the format permits. If the spinner goes wider outside off, strengthen cover or deep cover instead of preserving a leg-side map. The best spin bowlers of all time changed pace and angle, but each variation still needed a field that matched its expected shot.
A spin example
Attack, defend and mixed fields are choices, not labels for fixed diagrams. An attacking field spends players on catches and pressure, accepting some scoring space. A defensive field removes the highest-value boundary while making singles or twos contested. A mixed field may keep one slip, a tight ring and selected riders. The best defensive field in ODI cricket is not automatically five players on the rope, and the best powerplay field settings cannot use boundary protection that the phase prohibits. Match equation, batter pair and bowler control determine where the risk belongs.
Attack, defend or use a mixed field
Rebuild for the batter and ground rather than mirroring mechanically. A left-hander reverses off and leg side, but the bowler's angle, swing direction and around-the-wicket option change the geometry again. A batter standing deep, moving across or backing away opens different scoring arcs. Boundary distance, wind, slope and outfield speed can make one side safer to invite. Use the longer boundary only if the bowler can direct the likely hit there. At the best death overs field settings, the planned yorker or slower ball and its likely miss decide which five or fewer arcs deserve protection.
Adjust for batter and ground geometry
Communication turns dots into a field. Before the run-up, the captain should name the ball, tell close fielders whether a catch or single is the priority, assign boundary backups and identify the preferred throwing end. The wicketkeeper can relay batter movement and help count. Fielders should know whether they may move with the striker's action under the applicable Law, not improvise unfair movement. A quick hand signal can distinguish wide yorker from straight yorker or stock ball from variation, but the team must practise it before the match.
Give every fielder an operational role
After each ball, decide whether execution failed or the plan failed. If a fourth-stump ball is edged through an unoccupied second slip, the map may be wrong. If the bowler sends a half-volley onto leg stump and the batter hits through midwicket, the delivery missed a sound off-side plan. Change the field after repeated batter access, lost swing or turn, a new match equation, a bowler-method change or a ground mismatch. Do not chase every boundary. The greatest fast bowlers of all time still conceded good shots; captains need evidence, not panic.
Know whether the plan or execution failed
Common mistakes are copying an elite field for club pace, protecting a batter's historical strength while feeding another zone, and adding catchers the ball cannot reach. Captains forget the wicketkeeper in the count, leave ring fielders too deep to stop one, or place two riders where neither can attack a catch. They change field and delivery together without telling the bowler, then cannot diagnose the result. Another error is retaining yesterday's field after a left-hander, new ball, revised innings or bowling change has altered the contest. The best bowling order in cricket also matters because a field cannot manufacture skills the current bowler does not possess.
Common field-setting mistakes
Use seven questions before the next over: what restrictions apply now; what is the match objective; what ball can this bowler repeat; how is that ball meant to take a wicket or suppress runs; which shots are most likely; what exact job does every fielder have; and what evidence will trigger a change? Count all eleven, tell the team, and review actual pitch locations rather than the scoreboard alone. The best way to set a cricket field is a repeatable decision loop, not a perfect static diagram: legal field, clear ball, credible chance, protected miss, shared instruction and one measured adjustment at a time.