to do so in the future. Amateur, high school, and international baseball games often have a mercy rule so that games end sooner when the lead is deemed to be insurmountable (e.g. by 10 runs after 5 innings). However, since the home team always gets one final at-bat if they are trailing, the visiting team can in theory score unlimited runs in the top half of the inning. Cricket In cricket, teams run up the score in most competitions with the aim of increasing their net run rate, with the aim of helping them qualify for further advances in their tournament if they tie with other teams on number of points earned by matches won/lost/tied. In limited overs cricket rulesets such as One Day International and Twenty20, running up the score is highly encouraged by the team that wins the toss and chooses to bat, in order to give the second team a large score burden in their innings that must be overcome, and sustain fan excitement in a comeback attempt. The toss-winning team can also choose to field first, choosing to be strategic and assume the other team will have a low score during their batting innings. In Test cricket and first-class cricket, excessive accumulation of runs by one team may increase the likelihood of a draw, in which one or both teams is unable to finish its full allocation of innings. This can be unpopular with spectators, who may expect that a high-scoring team declare their innings closed before all their batsmen are dismissed to give the opposing team reasonable time to bat. The "follow-on" rule allows high-scoring teams to force their opponents to bat twice in a row; it may be considered unsportsmanlike for a team not to enforce the follow-on if they already have a substantial lead. Curling One of the unique rules of curling allows for the losing team to concede a match at any time, thereby preventing blowouts from occurring. In fact, it is sometimes considered unsportsmanlike for a team that is losing badly to not concede. For some major events, a game must play a certain amount of ends to be considered complete. As a protest, some teams that would have conceded earlier in the match may not take the game seriously at that point. Before teams were allowed to concede matches well before the normal end of the game, blowouts were common.