In many ways, football is a simple game: the team that scores the most goals wins. Yet in every single match, there are intriguing statistical sub-plots that help make the beautiful game the fascinating spectacle that it is. That's why, each week, takes a look at the numbers behind the results.

This week, we look at when Kalmar score frequently and where Ronaldo does, while also reflecting on the historic debut of Mauricio Baldivieso and Columbus Crew's home invincibility.

91 per cent of Kalmar's last 22 goals in the Swedish Allsvenskan have come in the second half of their matches. That figure was reached after Nanne Bergstrand's team scored thrice in the final 15 minutes to beat Brommapojkarna 3-1 on Sunday and climb to fourth. Rasmus Elm and Daniel Mendes were both on target in the defending champions' fourth straight victory: six of the former's last seven efforts have now come post-interval, while the latter's five league goals for the club have all been posted after the 84-minute mark.

36 goals in 30 matches at the Estadio Mineirao are the figures that belong to Ronaldo after he netted Corinthians' winner in a 2-1 victory over his former club Cruzeiro on Sunday. O Fenômeno began his career with A Raposa in 1993, and of the 56 goals in 58 appearances he recorded for the club, 32 in 28 came inside Belo Horizonte's footballing temple. The striker's other appearance at the Mineirao came for Brazil in 2004, when he scored three times - all from the penalty spot - to condemn Argentina to a 3-1 defeat in 2006 FIFA World Cup Germany™ qualifying. Ronaldo's latest strike, which came after he had masterfully created the opener before missing a penalty, was his 17th in 25 outings for Corinthians, yet curiously his first in eight attempts outside Sao Paulo state. It also took him on to six goals from 18 shots during the Brasileirao 2009 - an admirable ratio of 33.33 per cent.

18 regular-season games unbeaten at home is what Columbus Crew reached by overcoming Real Salt Lake 3-1 on Saturday, tieing the record San Jose Earthquakes established in 2005. The Ohio outfit, who boast Major League Soccer's best overall and away sequences without losing - 19 and nine matches respectively - also equaled their Californian counterparts' benchmark of 20 outings undefeated including MLS Cup play-off fixtures. Ironically, the last team to beat the Crew on their own soil was the Earthquakes, 2-0 in June of last year.

12 years and 362 days was the age at which Mauricio Baldivieso became the youngest player in the history of the Bolivian Primera Division on Sunday. The preteen was sent on by his father, Aurora coach Julio Cesar Baldivieso, in the 81st minute of their 1-0 defeat by La Paz, and was given a harsh introduction in the form of a fierce Henry Alaca challenge. It forced the debutant to limp off the pitch for treatment, but he swiftly returned to handsome applause from the visiting supporters. Baldivieso junior turned 13 today.

6 countries, all of which speak different languages, have now been called home by Maniche in little over four years, following the midfielder's move to German outfit Cologne. The Portugal international began his overseas adventure in July 2005, after nine years in his homeland, joining Russian side Dinamo Moscow. Thereafter, he spent loan periods with Chelsea in England and Italy's Inter Milan, either side of signing for Spanish giants Atletico Madrid.