World Cup finalists Paraguay were held to a 0-0 draw by an inexperienced Wales side in their friendly international at the Millennium Stadium.
Coach Anibal Ruiz had hoped this trip to Cardiff would reveal some key points about the British game before their World Cup opener with England on June 10 but his side left frustrated.
Wales winger Ryan Giggs blew an early chance to fire a long-range chip over Paraguay goalkeeper Justo Villar, who had deserted his goal line, when he scuffed his shot.
The home side, however, were indebted to veteran goalkeeper Paul Jones for a string of saves.
With Ruiz looking to Werder Bremen's Nelson Valdez to provide the goals in Germany should fellow striker Roque Santa Cruz not recover from injury, the 22-year-old found himself on the end of enough chances to snatch an opener.
After 14 minutes a hopeful ball from defence saw Valdez avoid the offside trap but his neat half-volley was ably saved by the 38-year-old Jones. Valdez then shot wide when the chance repeated itself two minutes later.
As Paraguay's possession told, Jones was called into action once more on 24 minutes to deny Valdez from close range, the Welshman saving brilliantly from the impressive Denis Caniza's follow-up.
Jones also reacted instinctively to keep out a volley from Carlos Paredes, his last action before he was replaced for the final 25 minutes by Lewis Price.
The youngster also made a fantastic save to keep Wales on level terms. Veteran striker Jose Cardozo had bamboozled the Welsh defence with a mazy run but Price, who plays in the English second division with Ipswich Town, was smartly off his line to smother.
