Vallo Lees, Kristjan Leisner, Ãœlari Lees and Kert Truus, from Estonia (pictured right) powered their way into the lead in the Boys Team preliminaries to earn the No. 1 seed for the Playoffs on Saturday morning.

The four Estonians fired games of 859, 807 and 900 in the second block on long oil Friday at Tali Bowl to jump from 6th place after the first block on short oil to 1st place with 5008 pinfall total and an average of 208.67.

Truus paced the team with 1362, the second highest individual series in the team event, and was followed by Ãœlari Lees (1307), Vallo Lees (1185) and Leisner (1154).

Park Jong-Woo, Kim Ju-Young, Shin Seung-Hyeon and Hong Hae-Sol from Korea maintained the second place with a solid 2445 series on the long pattern to finish the prelims with 4962 (206.75). Korea has made the finals of each of the six events (Boys and girls Singles, Doubles and Team) including 4 top seeds and two second seeds earning one gold and three silver medals thus far.

The top seeds in the World Youth Championships are still 0-4 in match play. The Korean girls are the top seed for the Girls Team finals, which will be played simultaneously with the boys team finals.

Chris Watson, Ben Taylor, Kevin McRae and Sam Cooley, Australia, leaped one spot to third place with 4952 (206.33). The Aussies sandwiched the highest team game of the event, 905, between 817 and 759, and will take on Korea in the semifinals.

Overnight leader United States (pictured right) slipped three spots behind games of 843, 769 and 790, but took the fourth and last spot with 4932 (205.50). The Americans were lucky that 5th placed Macau and 6th placed Finland could not match their pace from the first two games.

Macau started with 815 and 880 and needed 797 in the last game but managed 787 to finish with 4923 (205.13). The Finns fired games of 884 and 875 and needed another 831 to overtake the U.S. Boys by one pin but fell 23 pins short to end up with 4910 (204.58).

Andrew Koff (center), who carried Junior Team USA with a 1335 series, secured the gold medal in All Events (combined results of Singles, Doubles and Team) with 4036 pinfall total and an average of 224,22 for 18 games. Koff the first U.S. boy to win all-events gold. at World Youth Championships.

Korea's Park Jong-Woo (left) slipped to second place during the last three games to take the silver medal with 3994 (221.89). Finland's Samu Valaranta (right) posted the field-best 1421 series in the team event to jump into third place and to earn the bronze medal with 3965 (220.28).

The United States joined Korea as multiple gold medal winner. Korea, however, is the sole of the 46 participating countries that has medaled in all six disciplines so far and the only country that has both girls and boys in the Team finals. Seven of the eight Korean players, four girls and three boys, qualified for the Masters finals.

The latest World Youth champions are:

• Girls Singles - Kim Yeon-Ju, Korea
• Boys Singles - Adam Cairns, England
• Girls Doubles - Colombia (Laura Fonnegra & Maria Jose Rodriguez)
• Boys Doubles - United States (Craig Hanson & Andrew Koff)
• Girls All Events - Kim Moon-Jeong, Korea
• Girls All Events - Andrew Koff, United States

The top 4 teams advance to the playoffs scheduled to begin on Saturday morning at 9 a.m. local time. The top 16 boys from the All Events standings advance to best-of-five games Masters match play which will conclude the 11th World Youth Championships on Saturday and Sunday.

Three Koreans, two players each from England, Estonia, the Netherlands and the United States, as well as one each from Australia , Belgium, Finland, Latvia, and Venezuela, made the cut.

Match-ups for the Masters Round of 16:
#1 Andrew Koff, United States vs. #16 Richard Teece, England
#2 Park Jong-Woo, Korea vs. #15 Dwayne van Zandwijk, Netherlands
#3 Samu Valaranta, Finland vs. #14 Jacob Peters, United States
#4 Mats Maggi, Belgium vs. #13 Kim Ju-Young, Korea
#5 Daniels Vezis, Latvia vs. #12 Kevin Belandria, Venezuela
#6 Kert Truus, Estonia vs. #11 Ãœlari Lees, Estonia
#7 Sam Cooley, Australia vs. #10 Phil Hulst, Netherlands
#8 Shin Seung-Hyeon, Korea vs. #9 Steven Miller, England

The United States Bowling Congress is working in cooperation with the Finnish Bowling Federation to provide live video streaming of the semifinals and finals of each event. The coverage will be available on BOWL.com.

World Youth Championships - Upcoming Live Streaming Schedule
Saturday, July 31: Boys and Girls Team, 8 a.m. CET or 2 a.m. EDT
Saturday, July 31: Boys and Girls Masters, 1:00 p.m. CET or 7 a.m. EDT
Sunday, Aug. 1: Boys and Girls Masters, 8 a.m. CET or 2 a.m. EDT.